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Commit | Line | Data |
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54936004 | 1 | /* |
fd6ce8f6 | 2 | * virtual page mapping and translated block handling |
5fafdf24 | 3 | * |
54936004 FB |
4 | * Copyright (c) 2003 Fabrice Bellard |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
8167ee88 | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
54936004 | 18 | */ |
67b915a5 | 19 | #include "config.h" |
d5a8f07c FB |
20 | #ifdef _WIN32 |
21 | #include <windows.h> | |
22 | #else | |
a98d49b1 | 23 | #include <sys/types.h> |
d5a8f07c FB |
24 | #include <sys/mman.h> |
25 | #endif | |
54936004 | 26 | |
055403b2 | 27 | #include "qemu-common.h" |
6180a181 | 28 | #include "cpu.h" |
b67d9a52 | 29 | #include "tcg.h" |
b3c7724c | 30 | #include "hw/hw.h" |
cc9e98cb | 31 | #include "hw/qdev.h" |
74576198 | 32 | #include "osdep.h" |
7ba1e619 | 33 | #include "kvm.h" |
432d268c | 34 | #include "hw/xen.h" |
29e922b6 | 35 | #include "qemu-timer.h" |
62152b8a AK |
36 | #include "memory.h" |
37 | #include "exec-memory.h" | |
53a5960a PB |
38 | #if defined(CONFIG_USER_ONLY) |
39 | #include <qemu.h> | |
f01576f1 JL |
40 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
41 | #include <sys/param.h> | |
42 | #if __FreeBSD_version >= 700104 | |
43 | #define HAVE_KINFO_GETVMMAP | |
44 | #define sigqueue sigqueue_freebsd /* avoid redefinition */ | |
45 | #include <sys/time.h> | |
46 | #include <sys/proc.h> | |
47 | #include <machine/profile.h> | |
48 | #define _KERNEL | |
49 | #include <sys/user.h> | |
50 | #undef _KERNEL | |
51 | #undef sigqueue | |
52 | #include <libutil.h> | |
53 | #endif | |
54 | #endif | |
432d268c JN |
55 | #else /* !CONFIG_USER_ONLY */ |
56 | #include "xen-mapcache.h" | |
6506e4f9 | 57 | #include "trace.h" |
53a5960a | 58 | #endif |
54936004 | 59 | |
0cac1b66 BS |
60 | #include "cputlb.h" |
61 | ||
7762c2c1 | 62 | #include "memory-internal.h" |
67d95c15 | 63 | |
fd6ce8f6 | 64 | //#define DEBUG_TB_INVALIDATE |
66e85a21 | 65 | //#define DEBUG_FLUSH |
67d3b957 | 66 | //#define DEBUG_UNASSIGNED |
fd6ce8f6 FB |
67 | |
68 | /* make various TB consistency checks */ | |
5fafdf24 | 69 | //#define DEBUG_TB_CHECK |
fd6ce8f6 | 70 | |
1196be37 | 71 | //#define DEBUG_IOPORT |
db7b5426 | 72 | //#define DEBUG_SUBPAGE |
1196be37 | 73 | |
99773bd4 PB |
74 | #if !defined(CONFIG_USER_ONLY) |
75 | /* TB consistency checks only implemented for usermode emulation. */ | |
76 | #undef DEBUG_TB_CHECK | |
77 | #endif | |
78 | ||
9fa3e853 FB |
79 | #define SMC_BITMAP_USE_THRESHOLD 10 |
80 | ||
bdaf78e0 | 81 | static TranslationBlock *tbs; |
24ab68ac | 82 | static int code_gen_max_blocks; |
9fa3e853 | 83 | TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE]; |
bdaf78e0 | 84 | static int nb_tbs; |
eb51d102 | 85 | /* any access to the tbs or the page table must use this lock */ |
c227f099 | 86 | spinlock_t tb_lock = SPIN_LOCK_UNLOCKED; |
fd6ce8f6 | 87 | |
4438c8a9 | 88 | uint8_t *code_gen_prologue; |
bdaf78e0 | 89 | static uint8_t *code_gen_buffer; |
f1bc0bcc | 90 | static size_t code_gen_buffer_size; |
26a5f13b | 91 | /* threshold to flush the translated code buffer */ |
f1bc0bcc | 92 | static size_t code_gen_buffer_max_size; |
24ab68ac | 93 | static uint8_t *code_gen_ptr; |
fd6ce8f6 | 94 | |
e2eef170 | 95 | #if !defined(CONFIG_USER_ONLY) |
9fa3e853 | 96 | int phys_ram_fd; |
74576198 | 97 | static int in_migration; |
94a6b54f | 98 | |
85d59fef | 99 | RAMList ram_list = { .blocks = QLIST_HEAD_INITIALIZER(ram_list.blocks) }; |
62152b8a AK |
100 | |
101 | static MemoryRegion *system_memory; | |
309cb471 | 102 | static MemoryRegion *system_io; |
62152b8a | 103 | |
f6790af6 AK |
104 | AddressSpace address_space_io; |
105 | AddressSpace address_space_memory; | |
2673a5da | 106 | |
0e0df1e2 | 107 | MemoryRegion io_mem_ram, io_mem_rom, io_mem_unassigned, io_mem_notdirty; |
de712f94 | 108 | static MemoryRegion io_mem_subpage_ram; |
0e0df1e2 | 109 | |
e2eef170 | 110 | #endif |
9fa3e853 | 111 | |
9349b4f9 | 112 | CPUArchState *first_cpu; |
6a00d601 FB |
113 | /* current CPU in the current thread. It is only valid inside |
114 | cpu_exec() */ | |
9349b4f9 | 115 | DEFINE_TLS(CPUArchState *,cpu_single_env); |
2e70f6ef | 116 | /* 0 = Do not count executed instructions. |
bf20dc07 | 117 | 1 = Precise instruction counting. |
2e70f6ef PB |
118 | 2 = Adaptive rate instruction counting. */ |
119 | int use_icount = 0; | |
6a00d601 | 120 | |
54936004 | 121 | typedef struct PageDesc { |
92e873b9 | 122 | /* list of TBs intersecting this ram page */ |
fd6ce8f6 | 123 | TranslationBlock *first_tb; |
9fa3e853 FB |
124 | /* in order to optimize self modifying code, we count the number |
125 | of lookups we do to a given page to use a bitmap */ | |
126 | unsigned int code_write_count; | |
127 | uint8_t *code_bitmap; | |
128 | #if defined(CONFIG_USER_ONLY) | |
129 | unsigned long flags; | |
130 | #endif | |
54936004 FB |
131 | } PageDesc; |
132 | ||
41c1b1c9 | 133 | /* In system mode we want L1_MAP to be based on ram offsets, |
5cd2c5b6 RH |
134 | while in user mode we want it to be based on virtual addresses. */ |
135 | #if !defined(CONFIG_USER_ONLY) | |
41c1b1c9 PB |
136 | #if HOST_LONG_BITS < TARGET_PHYS_ADDR_SPACE_BITS |
137 | # define L1_MAP_ADDR_SPACE_BITS HOST_LONG_BITS | |
138 | #else | |
5cd2c5b6 | 139 | # define L1_MAP_ADDR_SPACE_BITS TARGET_PHYS_ADDR_SPACE_BITS |
41c1b1c9 | 140 | #endif |
bedb69ea | 141 | #else |
5cd2c5b6 | 142 | # define L1_MAP_ADDR_SPACE_BITS TARGET_VIRT_ADDR_SPACE_BITS |
bedb69ea | 143 | #endif |
54936004 | 144 | |
5cd2c5b6 RH |
145 | /* Size of the L2 (and L3, etc) page tables. */ |
146 | #define L2_BITS 10 | |
54936004 FB |
147 | #define L2_SIZE (1 << L2_BITS) |
148 | ||
3eef53df AK |
149 | #define P_L2_LEVELS \ |
150 | (((TARGET_PHYS_ADDR_SPACE_BITS - TARGET_PAGE_BITS - 1) / L2_BITS) + 1) | |
151 | ||
5cd2c5b6 | 152 | /* The bits remaining after N lower levels of page tables. */ |
5cd2c5b6 RH |
153 | #define V_L1_BITS_REM \ |
154 | ((L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS) % L2_BITS) | |
155 | ||
5cd2c5b6 RH |
156 | #if V_L1_BITS_REM < 4 |
157 | #define V_L1_BITS (V_L1_BITS_REM + L2_BITS) | |
158 | #else | |
159 | #define V_L1_BITS V_L1_BITS_REM | |
160 | #endif | |
161 | ||
5cd2c5b6 RH |
162 | #define V_L1_SIZE ((target_ulong)1 << V_L1_BITS) |
163 | ||
5cd2c5b6 RH |
164 | #define V_L1_SHIFT (L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS - V_L1_BITS) |
165 | ||
c6d50674 SW |
166 | uintptr_t qemu_real_host_page_size; |
167 | uintptr_t qemu_host_page_size; | |
168 | uintptr_t qemu_host_page_mask; | |
54936004 | 169 | |
5cd2c5b6 RH |
170 | /* This is a multi-level map on the virtual address space. |
171 | The bottom level has pointers to PageDesc. */ | |
172 | static void *l1_map[V_L1_SIZE]; | |
54936004 | 173 | |
e2eef170 | 174 | #if !defined(CONFIG_USER_ONLY) |
4346ae3e | 175 | |
5312bd8b AK |
176 | static MemoryRegionSection *phys_sections; |
177 | static unsigned phys_sections_nb, phys_sections_nb_alloc; | |
178 | static uint16_t phys_section_unassigned; | |
aa102231 AK |
179 | static uint16_t phys_section_notdirty; |
180 | static uint16_t phys_section_rom; | |
181 | static uint16_t phys_section_watch; | |
5312bd8b | 182 | |
d6f2ea22 AK |
183 | /* Simple allocator for PhysPageEntry nodes */ |
184 | static PhysPageEntry (*phys_map_nodes)[L2_SIZE]; | |
185 | static unsigned phys_map_nodes_nb, phys_map_nodes_nb_alloc; | |
186 | ||
07f07b31 | 187 | #define PHYS_MAP_NODE_NIL (((uint16_t)~0) >> 1) |
d6f2ea22 | 188 | |
e2eef170 | 189 | static void io_mem_init(void); |
62152b8a | 190 | static void memory_map_init(void); |
e2eef170 | 191 | |
1ec9b909 | 192 | static MemoryRegion io_mem_watch; |
6658ffb8 | 193 | #endif |
33417e70 | 194 | |
e3db7226 | 195 | /* statistics */ |
e3db7226 FB |
196 | static int tb_flush_count; |
197 | static int tb_phys_invalidate_count; | |
198 | ||
7cb69cae | 199 | #ifdef _WIN32 |
4438c8a9 | 200 | static inline void map_exec(void *addr, long size) |
7cb69cae FB |
201 | { |
202 | DWORD old_protect; | |
203 | VirtualProtect(addr, size, | |
204 | PAGE_EXECUTE_READWRITE, &old_protect); | |
205 | ||
206 | } | |
207 | #else | |
4438c8a9 | 208 | static inline void map_exec(void *addr, long size) |
7cb69cae | 209 | { |
4369415f | 210 | unsigned long start, end, page_size; |
7cb69cae | 211 | |
4369415f | 212 | page_size = getpagesize(); |
7cb69cae | 213 | start = (unsigned long)addr; |
4369415f | 214 | start &= ~(page_size - 1); |
7cb69cae FB |
215 | |
216 | end = (unsigned long)addr + size; | |
4369415f FB |
217 | end += page_size - 1; |
218 | end &= ~(page_size - 1); | |
7cb69cae FB |
219 | |
220 | mprotect((void *)start, end - start, | |
221 | PROT_READ | PROT_WRITE | PROT_EXEC); | |
222 | } | |
223 | #endif | |
224 | ||
b346ff46 | 225 | static void page_init(void) |
54936004 | 226 | { |
83fb7adf | 227 | /* NOTE: we can always suppose that qemu_host_page_size >= |
54936004 | 228 | TARGET_PAGE_SIZE */ |
c2b48b69 AL |
229 | #ifdef _WIN32 |
230 | { | |
231 | SYSTEM_INFO system_info; | |
232 | ||
233 | GetSystemInfo(&system_info); | |
234 | qemu_real_host_page_size = system_info.dwPageSize; | |
235 | } | |
236 | #else | |
237 | qemu_real_host_page_size = getpagesize(); | |
238 | #endif | |
83fb7adf FB |
239 | if (qemu_host_page_size == 0) |
240 | qemu_host_page_size = qemu_real_host_page_size; | |
241 | if (qemu_host_page_size < TARGET_PAGE_SIZE) | |
242 | qemu_host_page_size = TARGET_PAGE_SIZE; | |
83fb7adf | 243 | qemu_host_page_mask = ~(qemu_host_page_size - 1); |
50a9569b | 244 | |
2e9a5713 | 245 | #if defined(CONFIG_BSD) && defined(CONFIG_USER_ONLY) |
50a9569b | 246 | { |
f01576f1 JL |
247 | #ifdef HAVE_KINFO_GETVMMAP |
248 | struct kinfo_vmentry *freep; | |
249 | int i, cnt; | |
250 | ||
251 | freep = kinfo_getvmmap(getpid(), &cnt); | |
252 | if (freep) { | |
253 | mmap_lock(); | |
254 | for (i = 0; i < cnt; i++) { | |
255 | unsigned long startaddr, endaddr; | |
256 | ||
257 | startaddr = freep[i].kve_start; | |
258 | endaddr = freep[i].kve_end; | |
259 | if (h2g_valid(startaddr)) { | |
260 | startaddr = h2g(startaddr) & TARGET_PAGE_MASK; | |
261 | ||
262 | if (h2g_valid(endaddr)) { | |
263 | endaddr = h2g(endaddr); | |
fd436907 | 264 | page_set_flags(startaddr, endaddr, PAGE_RESERVED); |
f01576f1 JL |
265 | } else { |
266 | #if TARGET_ABI_BITS <= L1_MAP_ADDR_SPACE_BITS | |
267 | endaddr = ~0ul; | |
fd436907 | 268 | page_set_flags(startaddr, endaddr, PAGE_RESERVED); |
f01576f1 JL |
269 | #endif |
270 | } | |
271 | } | |
272 | } | |
273 | free(freep); | |
274 | mmap_unlock(); | |
275 | } | |
276 | #else | |
50a9569b | 277 | FILE *f; |
50a9569b | 278 | |
0776590d | 279 | last_brk = (unsigned long)sbrk(0); |
5cd2c5b6 | 280 | |
fd436907 | 281 | f = fopen("/compat/linux/proc/self/maps", "r"); |
50a9569b | 282 | if (f) { |
5cd2c5b6 RH |
283 | mmap_lock(); |
284 | ||
50a9569b | 285 | do { |
5cd2c5b6 RH |
286 | unsigned long startaddr, endaddr; |
287 | int n; | |
288 | ||
289 | n = fscanf (f, "%lx-%lx %*[^\n]\n", &startaddr, &endaddr); | |
290 | ||
291 | if (n == 2 && h2g_valid(startaddr)) { | |
292 | startaddr = h2g(startaddr) & TARGET_PAGE_MASK; | |
293 | ||
294 | if (h2g_valid(endaddr)) { | |
295 | endaddr = h2g(endaddr); | |
296 | } else { | |
297 | endaddr = ~0ul; | |
298 | } | |
299 | page_set_flags(startaddr, endaddr, PAGE_RESERVED); | |
50a9569b AZ |
300 | } |
301 | } while (!feof(f)); | |
5cd2c5b6 | 302 | |
50a9569b | 303 | fclose(f); |
5cd2c5b6 | 304 | mmap_unlock(); |
50a9569b | 305 | } |
f01576f1 | 306 | #endif |
50a9569b AZ |
307 | } |
308 | #endif | |
54936004 FB |
309 | } |
310 | ||
41c1b1c9 | 311 | static PageDesc *page_find_alloc(tb_page_addr_t index, int alloc) |
54936004 | 312 | { |
41c1b1c9 PB |
313 | PageDesc *pd; |
314 | void **lp; | |
315 | int i; | |
316 | ||
5cd2c5b6 | 317 | #if defined(CONFIG_USER_ONLY) |
7267c094 | 318 | /* We can't use g_malloc because it may recurse into a locked mutex. */ |
5cd2c5b6 RH |
319 | # define ALLOC(P, SIZE) \ |
320 | do { \ | |
321 | P = mmap(NULL, SIZE, PROT_READ | PROT_WRITE, \ | |
322 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \ | |
5cd2c5b6 RH |
323 | } while (0) |
324 | #else | |
325 | # define ALLOC(P, SIZE) \ | |
7267c094 | 326 | do { P = g_malloc0(SIZE); } while (0) |
17e2377a | 327 | #endif |
434929bf | 328 | |
5cd2c5b6 RH |
329 | /* Level 1. Always allocated. */ |
330 | lp = l1_map + ((index >> V_L1_SHIFT) & (V_L1_SIZE - 1)); | |
331 | ||
332 | /* Level 2..N-1. */ | |
333 | for (i = V_L1_SHIFT / L2_BITS - 1; i > 0; i--) { | |
334 | void **p = *lp; | |
335 | ||
336 | if (p == NULL) { | |
337 | if (!alloc) { | |
338 | return NULL; | |
339 | } | |
340 | ALLOC(p, sizeof(void *) * L2_SIZE); | |
341 | *lp = p; | |
17e2377a | 342 | } |
5cd2c5b6 RH |
343 | |
344 | lp = p + ((index >> (i * L2_BITS)) & (L2_SIZE - 1)); | |
345 | } | |
346 | ||
347 | pd = *lp; | |
348 | if (pd == NULL) { | |
349 | if (!alloc) { | |
350 | return NULL; | |
351 | } | |
352 | ALLOC(pd, sizeof(PageDesc) * L2_SIZE); | |
353 | *lp = pd; | |
54936004 | 354 | } |
5cd2c5b6 RH |
355 | |
356 | #undef ALLOC | |
5cd2c5b6 RH |
357 | |
358 | return pd + (index & (L2_SIZE - 1)); | |
54936004 FB |
359 | } |
360 | ||
41c1b1c9 | 361 | static inline PageDesc *page_find(tb_page_addr_t index) |
54936004 | 362 | { |
5cd2c5b6 | 363 | return page_find_alloc(index, 0); |
fd6ce8f6 FB |
364 | } |
365 | ||
6d9a1304 | 366 | #if !defined(CONFIG_USER_ONLY) |
d6f2ea22 | 367 | |
f7bf5461 | 368 | static void phys_map_node_reserve(unsigned nodes) |
d6f2ea22 | 369 | { |
f7bf5461 | 370 | if (phys_map_nodes_nb + nodes > phys_map_nodes_nb_alloc) { |
d6f2ea22 AK |
371 | typedef PhysPageEntry Node[L2_SIZE]; |
372 | phys_map_nodes_nb_alloc = MAX(phys_map_nodes_nb_alloc * 2, 16); | |
f7bf5461 AK |
373 | phys_map_nodes_nb_alloc = MAX(phys_map_nodes_nb_alloc, |
374 | phys_map_nodes_nb + nodes); | |
d6f2ea22 AK |
375 | phys_map_nodes = g_renew(Node, phys_map_nodes, |
376 | phys_map_nodes_nb_alloc); | |
377 | } | |
f7bf5461 AK |
378 | } |
379 | ||
380 | static uint16_t phys_map_node_alloc(void) | |
381 | { | |
382 | unsigned i; | |
383 | uint16_t ret; | |
384 | ||
385 | ret = phys_map_nodes_nb++; | |
386 | assert(ret != PHYS_MAP_NODE_NIL); | |
387 | assert(ret != phys_map_nodes_nb_alloc); | |
d6f2ea22 | 388 | for (i = 0; i < L2_SIZE; ++i) { |
07f07b31 | 389 | phys_map_nodes[ret][i].is_leaf = 0; |
c19e8800 | 390 | phys_map_nodes[ret][i].ptr = PHYS_MAP_NODE_NIL; |
d6f2ea22 | 391 | } |
f7bf5461 | 392 | return ret; |
d6f2ea22 AK |
393 | } |
394 | ||
395 | static void phys_map_nodes_reset(void) | |
396 | { | |
397 | phys_map_nodes_nb = 0; | |
398 | } | |
399 | ||
92e873b9 | 400 | |
a8170e5e AK |
401 | static void phys_page_set_level(PhysPageEntry *lp, hwaddr *index, |
402 | hwaddr *nb, uint16_t leaf, | |
2999097b | 403 | int level) |
f7bf5461 AK |
404 | { |
405 | PhysPageEntry *p; | |
406 | int i; | |
a8170e5e | 407 | hwaddr step = (hwaddr)1 << (level * L2_BITS); |
108c49b8 | 408 | |
07f07b31 | 409 | if (!lp->is_leaf && lp->ptr == PHYS_MAP_NODE_NIL) { |
c19e8800 AK |
410 | lp->ptr = phys_map_node_alloc(); |
411 | p = phys_map_nodes[lp->ptr]; | |
f7bf5461 AK |
412 | if (level == 0) { |
413 | for (i = 0; i < L2_SIZE; i++) { | |
07f07b31 | 414 | p[i].is_leaf = 1; |
c19e8800 | 415 | p[i].ptr = phys_section_unassigned; |
4346ae3e | 416 | } |
67c4d23c | 417 | } |
f7bf5461 | 418 | } else { |
c19e8800 | 419 | p = phys_map_nodes[lp->ptr]; |
92e873b9 | 420 | } |
2999097b | 421 | lp = &p[(*index >> (level * L2_BITS)) & (L2_SIZE - 1)]; |
f7bf5461 | 422 | |
2999097b | 423 | while (*nb && lp < &p[L2_SIZE]) { |
07f07b31 AK |
424 | if ((*index & (step - 1)) == 0 && *nb >= step) { |
425 | lp->is_leaf = true; | |
c19e8800 | 426 | lp->ptr = leaf; |
07f07b31 AK |
427 | *index += step; |
428 | *nb -= step; | |
2999097b AK |
429 | } else { |
430 | phys_page_set_level(lp, index, nb, leaf, level - 1); | |
431 | } | |
432 | ++lp; | |
f7bf5461 AK |
433 | } |
434 | } | |
435 | ||
ac1970fb | 436 | static void phys_page_set(AddressSpaceDispatch *d, |
a8170e5e | 437 | hwaddr index, hwaddr nb, |
2999097b | 438 | uint16_t leaf) |
f7bf5461 | 439 | { |
2999097b | 440 | /* Wildly overreserve - it doesn't matter much. */ |
07f07b31 | 441 | phys_map_node_reserve(3 * P_L2_LEVELS); |
5cd2c5b6 | 442 | |
ac1970fb | 443 | phys_page_set_level(&d->phys_map, &index, &nb, leaf, P_L2_LEVELS - 1); |
92e873b9 FB |
444 | } |
445 | ||
a8170e5e | 446 | MemoryRegionSection *phys_page_find(AddressSpaceDispatch *d, hwaddr index) |
92e873b9 | 447 | { |
ac1970fb | 448 | PhysPageEntry lp = d->phys_map; |
31ab2b4a AK |
449 | PhysPageEntry *p; |
450 | int i; | |
31ab2b4a | 451 | uint16_t s_index = phys_section_unassigned; |
f1f6e3b8 | 452 | |
07f07b31 | 453 | for (i = P_L2_LEVELS - 1; i >= 0 && !lp.is_leaf; i--) { |
c19e8800 | 454 | if (lp.ptr == PHYS_MAP_NODE_NIL) { |
31ab2b4a AK |
455 | goto not_found; |
456 | } | |
c19e8800 | 457 | p = phys_map_nodes[lp.ptr]; |
31ab2b4a | 458 | lp = p[(index >> (i * L2_BITS)) & (L2_SIZE - 1)]; |
5312bd8b | 459 | } |
31ab2b4a | 460 | |
c19e8800 | 461 | s_index = lp.ptr; |
31ab2b4a | 462 | not_found: |
f3705d53 AK |
463 | return &phys_sections[s_index]; |
464 | } | |
465 | ||
e5548617 BS |
466 | bool memory_region_is_unassigned(MemoryRegion *mr) |
467 | { | |
468 | return mr != &io_mem_ram && mr != &io_mem_rom | |
469 | && mr != &io_mem_notdirty && !mr->rom_device | |
470 | && mr != &io_mem_watch; | |
471 | } | |
472 | ||
c8a706fe PB |
473 | #define mmap_lock() do { } while(0) |
474 | #define mmap_unlock() do { } while(0) | |
9fa3e853 | 475 | #endif |
fd6ce8f6 | 476 | |
4369415f | 477 | #if defined(CONFIG_USER_ONLY) |
ccbb4d44 | 478 | /* Currently it is not recommended to allocate big chunks of data in |
f1bc0bcc RH |
479 | user mode. It will change when a dedicated libc will be used. */ |
480 | /* ??? 64-bit hosts ought to have no problem mmaping data outside the | |
481 | region in which the guest needs to run. Revisit this. */ | |
4369415f FB |
482 | #define USE_STATIC_CODE_GEN_BUFFER |
483 | #endif | |
484 | ||
f1bc0bcc RH |
485 | /* ??? Should configure for this, not list operating systems here. */ |
486 | #if (defined(__linux__) \ | |
487 | || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \ | |
488 | || defined(__DragonFly__) || defined(__OpenBSD__) \ | |
489 | || defined(__NetBSD__)) | |
490 | # define USE_MMAP | |
4369415f FB |
491 | #endif |
492 | ||
74d590c8 RH |
493 | /* Minimum size of the code gen buffer. This number is randomly chosen, |
494 | but not so small that we can't have a fair number of TB's live. */ | |
495 | #define MIN_CODE_GEN_BUFFER_SIZE (1024u * 1024) | |
496 | ||
f1bc0bcc RH |
497 | /* Maximum size of the code gen buffer we'd like to use. Unless otherwise |
498 | indicated, this is constrained by the range of direct branches on the | |
499 | host cpu, as used by the TCG implementation of goto_tb. */ | |
500 | #if defined(__x86_64__) | |
501 | # define MAX_CODE_GEN_BUFFER_SIZE (2ul * 1024 * 1024 * 1024) | |
502 | #elif defined(__sparc__) | |
503 | # define MAX_CODE_GEN_BUFFER_SIZE (2ul * 1024 * 1024 * 1024) | |
504 | #elif defined(__arm__) | |
505 | # define MAX_CODE_GEN_BUFFER_SIZE (16u * 1024 * 1024) | |
506 | #elif defined(__s390x__) | |
507 | /* We have a +- 4GB range on the branches; leave some slop. */ | |
508 | # define MAX_CODE_GEN_BUFFER_SIZE (3ul * 1024 * 1024 * 1024) | |
509 | #else | |
510 | # define MAX_CODE_GEN_BUFFER_SIZE ((size_t)-1) | |
511 | #endif | |
512 | ||
3d85a72f RH |
513 | #define DEFAULT_CODE_GEN_BUFFER_SIZE_1 (32u * 1024 * 1024) |
514 | ||
515 | #define DEFAULT_CODE_GEN_BUFFER_SIZE \ | |
516 | (DEFAULT_CODE_GEN_BUFFER_SIZE_1 < MAX_CODE_GEN_BUFFER_SIZE \ | |
517 | ? DEFAULT_CODE_GEN_BUFFER_SIZE_1 : MAX_CODE_GEN_BUFFER_SIZE) | |
f1bc0bcc RH |
518 | |
519 | static inline size_t size_code_gen_buffer(size_t tb_size) | |
26a5f13b | 520 | { |
f1bc0bcc RH |
521 | /* Size the buffer. */ |
522 | if (tb_size == 0) { | |
4369415f | 523 | #ifdef USE_STATIC_CODE_GEN_BUFFER |
f1bc0bcc | 524 | tb_size = DEFAULT_CODE_GEN_BUFFER_SIZE; |
4369415f | 525 | #else |
f1bc0bcc RH |
526 | /* ??? Needs adjustments. */ |
527 | /* ??? If we relax the requirement that CONFIG_USER_ONLY use the | |
528 | static buffer, we could size this on RESERVED_VA, on the text | |
529 | segment size of the executable, or continue to use the default. */ | |
530 | tb_size = (unsigned long)(ram_size / 4); | |
4369415f | 531 | #endif |
26a5f13b | 532 | } |
f1bc0bcc RH |
533 | if (tb_size < MIN_CODE_GEN_BUFFER_SIZE) { |
534 | tb_size = MIN_CODE_GEN_BUFFER_SIZE; | |
26a5f13b | 535 | } |
f1bc0bcc RH |
536 | if (tb_size > MAX_CODE_GEN_BUFFER_SIZE) { |
537 | tb_size = MAX_CODE_GEN_BUFFER_SIZE; | |
06e67a82 | 538 | } |
f1bc0bcc RH |
539 | code_gen_buffer_size = tb_size; |
540 | return tb_size; | |
541 | } | |
542 | ||
543 | #ifdef USE_STATIC_CODE_GEN_BUFFER | |
544 | static uint8_t static_code_gen_buffer[DEFAULT_CODE_GEN_BUFFER_SIZE] | |
545 | __attribute__((aligned(CODE_GEN_ALIGN))); | |
546 | ||
547 | static inline void *alloc_code_gen_buffer(void) | |
548 | { | |
549 | map_exec(static_code_gen_buffer, code_gen_buffer_size); | |
550 | return static_code_gen_buffer; | |
551 | } | |
552 | #elif defined(USE_MMAP) | |
553 | static inline void *alloc_code_gen_buffer(void) | |
554 | { | |
555 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
556 | uintptr_t start = 0; | |
557 | void *buf; | |
558 | ||
559 | /* Constrain the position of the buffer based on the host cpu. | |
560 | Note that these addresses are chosen in concert with the | |
561 | addresses assigned in the relevant linker script file. */ | |
405def18 RH |
562 | # if defined(__PIE__) || defined(__PIC__) |
563 | /* Don't bother setting a preferred location if we're building | |
564 | a position-independent executable. We're more likely to get | |
565 | an address near the main executable if we let the kernel | |
566 | choose the address. */ | |
567 | # elif defined(__x86_64__) && defined(MAP_32BIT) | |
f1bc0bcc RH |
568 | /* Force the memory down into low memory with the executable. |
569 | Leave the choice of exact location with the kernel. */ | |
570 | flags |= MAP_32BIT; | |
571 | /* Cannot expect to map more than 800MB in low memory. */ | |
572 | if (code_gen_buffer_size > 800u * 1024 * 1024) { | |
573 | code_gen_buffer_size = 800u * 1024 * 1024; | |
574 | } | |
575 | # elif defined(__sparc__) | |
576 | start = 0x40000000ul; | |
577 | # elif defined(__s390x__) | |
578 | start = 0x90000000ul; | |
579 | # endif | |
580 | ||
581 | buf = mmap((void *)start, code_gen_buffer_size, | |
582 | PROT_WRITE | PROT_READ | PROT_EXEC, flags, -1, 0); | |
583 | return buf == MAP_FAILED ? NULL : buf; | |
584 | } | |
26a5f13b | 585 | #else |
f1bc0bcc RH |
586 | static inline void *alloc_code_gen_buffer(void) |
587 | { | |
588 | void *buf = g_malloc(code_gen_buffer_size); | |
589 | if (buf) { | |
590 | map_exec(buf, code_gen_buffer_size); | |
591 | } | |
592 | return buf; | |
593 | } | |
594 | #endif /* USE_STATIC_CODE_GEN_BUFFER, USE_MMAP */ | |
595 | ||
596 | static inline void code_gen_alloc(size_t tb_size) | |
597 | { | |
598 | code_gen_buffer_size = size_code_gen_buffer(tb_size); | |
599 | code_gen_buffer = alloc_code_gen_buffer(); | |
600 | if (code_gen_buffer == NULL) { | |
601 | fprintf(stderr, "Could not allocate dynamic translator buffer\n"); | |
602 | exit(1); | |
603 | } | |
604 | ||
4438c8a9 RH |
605 | /* Steal room for the prologue at the end of the buffer. This ensures |
606 | (via the MAX_CODE_GEN_BUFFER_SIZE limits above) that direct branches | |
607 | from TB's to the prologue are going to be in range. It also means | |
608 | that we don't need to mark (additional) portions of the data segment | |
609 | as executable. */ | |
610 | code_gen_prologue = code_gen_buffer + code_gen_buffer_size - 1024; | |
611 | code_gen_buffer_size -= 1024; | |
612 | ||
a884da8a PM |
613 | code_gen_buffer_max_size = code_gen_buffer_size - |
614 | (TCG_MAX_OP_SIZE * OPC_BUF_SIZE); | |
26a5f13b | 615 | code_gen_max_blocks = code_gen_buffer_size / CODE_GEN_AVG_BLOCK_SIZE; |
7267c094 | 616 | tbs = g_malloc(code_gen_max_blocks * sizeof(TranslationBlock)); |
26a5f13b FB |
617 | } |
618 | ||
619 | /* Must be called before using the QEMU cpus. 'tb_size' is the size | |
620 | (in bytes) allocated to the translation buffer. Zero means default | |
621 | size. */ | |
d5ab9713 | 622 | void tcg_exec_init(unsigned long tb_size) |
26a5f13b | 623 | { |
26a5f13b FB |
624 | cpu_gen_init(); |
625 | code_gen_alloc(tb_size); | |
626 | code_gen_ptr = code_gen_buffer; | |
813da627 | 627 | tcg_register_jit(code_gen_buffer, code_gen_buffer_size); |
4369415f | 628 | page_init(); |
9002ec79 RH |
629 | #if !defined(CONFIG_USER_ONLY) || !defined(CONFIG_USE_GUEST_BASE) |
630 | /* There's no guest base to take into account, so go ahead and | |
631 | initialize the prologue now. */ | |
632 | tcg_prologue_init(&tcg_ctx); | |
633 | #endif | |
26a5f13b FB |
634 | } |
635 | ||
d5ab9713 JK |
636 | bool tcg_enabled(void) |
637 | { | |
638 | return code_gen_buffer != NULL; | |
639 | } | |
640 | ||
641 | void cpu_exec_init_all(void) | |
642 | { | |
643 | #if !defined(CONFIG_USER_ONLY) | |
644 | memory_map_init(); | |
645 | io_mem_init(); | |
646 | #endif | |
647 | } | |
648 | ||
9656f324 PB |
649 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
650 | ||
e59fb374 | 651 | static int cpu_common_post_load(void *opaque, int version_id) |
e7f4eff7 | 652 | { |
9349b4f9 | 653 | CPUArchState *env = opaque; |
9656f324 | 654 | |
3098dba0 AJ |
655 | /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the |
656 | version_id is increased. */ | |
657 | env->interrupt_request &= ~0x01; | |
9656f324 PB |
658 | tlb_flush(env, 1); |
659 | ||
660 | return 0; | |
661 | } | |
e7f4eff7 JQ |
662 | |
663 | static const VMStateDescription vmstate_cpu_common = { | |
664 | .name = "cpu_common", | |
665 | .version_id = 1, | |
666 | .minimum_version_id = 1, | |
667 | .minimum_version_id_old = 1, | |
e7f4eff7 JQ |
668 | .post_load = cpu_common_post_load, |
669 | .fields = (VMStateField []) { | |
9349b4f9 AF |
670 | VMSTATE_UINT32(halted, CPUArchState), |
671 | VMSTATE_UINT32(interrupt_request, CPUArchState), | |
e7f4eff7 JQ |
672 | VMSTATE_END_OF_LIST() |
673 | } | |
674 | }; | |
9656f324 PB |
675 | #endif |
676 | ||
9349b4f9 | 677 | CPUArchState *qemu_get_cpu(int cpu) |
950f1472 | 678 | { |
9349b4f9 | 679 | CPUArchState *env = first_cpu; |
950f1472 GC |
680 | |
681 | while (env) { | |
682 | if (env->cpu_index == cpu) | |
683 | break; | |
684 | env = env->next_cpu; | |
685 | } | |
686 | ||
687 | return env; | |
688 | } | |
689 | ||
9349b4f9 | 690 | void cpu_exec_init(CPUArchState *env) |
fd6ce8f6 | 691 | { |
9f09e18a AF |
692 | #ifndef CONFIG_USER_ONLY |
693 | CPUState *cpu = ENV_GET_CPU(env); | |
694 | #endif | |
9349b4f9 | 695 | CPUArchState **penv; |
6a00d601 FB |
696 | int cpu_index; |
697 | ||
c2764719 PB |
698 | #if defined(CONFIG_USER_ONLY) |
699 | cpu_list_lock(); | |
700 | #endif | |
6a00d601 FB |
701 | env->next_cpu = NULL; |
702 | penv = &first_cpu; | |
703 | cpu_index = 0; | |
704 | while (*penv != NULL) { | |
1e9fa730 | 705 | penv = &(*penv)->next_cpu; |
6a00d601 FB |
706 | cpu_index++; |
707 | } | |
708 | env->cpu_index = cpu_index; | |
268a362c | 709 | env->numa_node = 0; |
72cf2d4f BS |
710 | QTAILQ_INIT(&env->breakpoints); |
711 | QTAILQ_INIT(&env->watchpoints); | |
dc7a09cf | 712 | #ifndef CONFIG_USER_ONLY |
9f09e18a | 713 | cpu->thread_id = qemu_get_thread_id(); |
dc7a09cf | 714 | #endif |
6a00d601 | 715 | *penv = env; |
c2764719 PB |
716 | #if defined(CONFIG_USER_ONLY) |
717 | cpu_list_unlock(); | |
718 | #endif | |
b3c7724c | 719 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
0be71e32 AW |
720 | vmstate_register(NULL, cpu_index, &vmstate_cpu_common, env); |
721 | register_savevm(NULL, "cpu", cpu_index, CPU_SAVE_VERSION, | |
b3c7724c PB |
722 | cpu_save, cpu_load, env); |
723 | #endif | |
fd6ce8f6 FB |
724 | } |
725 | ||
d1a1eb74 TG |
726 | /* Allocate a new translation block. Flush the translation buffer if |
727 | too many translation blocks or too much generated code. */ | |
728 | static TranslationBlock *tb_alloc(target_ulong pc) | |
729 | { | |
730 | TranslationBlock *tb; | |
731 | ||
732 | if (nb_tbs >= code_gen_max_blocks || | |
733 | (code_gen_ptr - code_gen_buffer) >= code_gen_buffer_max_size) | |
734 | return NULL; | |
735 | tb = &tbs[nb_tbs++]; | |
736 | tb->pc = pc; | |
737 | tb->cflags = 0; | |
738 | return tb; | |
739 | } | |
740 | ||
741 | void tb_free(TranslationBlock *tb) | |
742 | { | |
743 | /* In practice this is mostly used for single use temporary TB | |
744 | Ignore the hard cases and just back up if this TB happens to | |
745 | be the last one generated. */ | |
746 | if (nb_tbs > 0 && tb == &tbs[nb_tbs - 1]) { | |
747 | code_gen_ptr = tb->tc_ptr; | |
748 | nb_tbs--; | |
749 | } | |
750 | } | |
751 | ||
9fa3e853 FB |
752 | static inline void invalidate_page_bitmap(PageDesc *p) |
753 | { | |
754 | if (p->code_bitmap) { | |
7267c094 | 755 | g_free(p->code_bitmap); |
9fa3e853 FB |
756 | p->code_bitmap = NULL; |
757 | } | |
758 | p->code_write_count = 0; | |
759 | } | |
760 | ||
5cd2c5b6 RH |
761 | /* Set to NULL all the 'first_tb' fields in all PageDescs. */ |
762 | ||
763 | static void page_flush_tb_1 (int level, void **lp) | |
fd6ce8f6 | 764 | { |
5cd2c5b6 | 765 | int i; |
fd6ce8f6 | 766 | |
5cd2c5b6 RH |
767 | if (*lp == NULL) { |
768 | return; | |
769 | } | |
770 | if (level == 0) { | |
771 | PageDesc *pd = *lp; | |
7296abac | 772 | for (i = 0; i < L2_SIZE; ++i) { |
5cd2c5b6 RH |
773 | pd[i].first_tb = NULL; |
774 | invalidate_page_bitmap(pd + i); | |
fd6ce8f6 | 775 | } |
5cd2c5b6 RH |
776 | } else { |
777 | void **pp = *lp; | |
7296abac | 778 | for (i = 0; i < L2_SIZE; ++i) { |
5cd2c5b6 RH |
779 | page_flush_tb_1 (level - 1, pp + i); |
780 | } | |
781 | } | |
782 | } | |
783 | ||
784 | static void page_flush_tb(void) | |
785 | { | |
786 | int i; | |
787 | for (i = 0; i < V_L1_SIZE; i++) { | |
788 | page_flush_tb_1(V_L1_SHIFT / L2_BITS - 1, l1_map + i); | |
fd6ce8f6 FB |
789 | } |
790 | } | |
791 | ||
792 | /* flush all the translation blocks */ | |
d4e8164f | 793 | /* XXX: tb_flush is currently not thread safe */ |
9349b4f9 | 794 | void tb_flush(CPUArchState *env1) |
fd6ce8f6 | 795 | { |
9349b4f9 | 796 | CPUArchState *env; |
0124311e | 797 | #if defined(DEBUG_FLUSH) |
ab3d1727 BS |
798 | printf("qemu: flush code_size=%ld nb_tbs=%d avg_tb_size=%ld\n", |
799 | (unsigned long)(code_gen_ptr - code_gen_buffer), | |
800 | nb_tbs, nb_tbs > 0 ? | |
801 | ((unsigned long)(code_gen_ptr - code_gen_buffer)) / nb_tbs : 0); | |
fd6ce8f6 | 802 | #endif |
26a5f13b | 803 | if ((unsigned long)(code_gen_ptr - code_gen_buffer) > code_gen_buffer_size) |
a208e54a PB |
804 | cpu_abort(env1, "Internal error: code buffer overflow\n"); |
805 | ||
fd6ce8f6 | 806 | nb_tbs = 0; |
3b46e624 | 807 | |
6a00d601 FB |
808 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
809 | memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *)); | |
810 | } | |
9fa3e853 | 811 | |
8a8a608f | 812 | memset (tb_phys_hash, 0, CODE_GEN_PHYS_HASH_SIZE * sizeof (void *)); |
fd6ce8f6 | 813 | page_flush_tb(); |
9fa3e853 | 814 | |
fd6ce8f6 | 815 | code_gen_ptr = code_gen_buffer; |
d4e8164f FB |
816 | /* XXX: flush processor icache at this point if cache flush is |
817 | expensive */ | |
e3db7226 | 818 | tb_flush_count++; |
fd6ce8f6 FB |
819 | } |
820 | ||
821 | #ifdef DEBUG_TB_CHECK | |
822 | ||
bc98a7ef | 823 | static void tb_invalidate_check(target_ulong address) |
fd6ce8f6 FB |
824 | { |
825 | TranslationBlock *tb; | |
826 | int i; | |
827 | address &= TARGET_PAGE_MASK; | |
99773bd4 PB |
828 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
829 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { | |
fd6ce8f6 FB |
830 | if (!(address + TARGET_PAGE_SIZE <= tb->pc || |
831 | address >= tb->pc + tb->size)) { | |
0bf9e31a BS |
832 | printf("ERROR invalidate: address=" TARGET_FMT_lx |
833 | " PC=%08lx size=%04x\n", | |
99773bd4 | 834 | address, (long)tb->pc, tb->size); |
fd6ce8f6 FB |
835 | } |
836 | } | |
837 | } | |
838 | } | |
839 | ||
840 | /* verify that all the pages have correct rights for code */ | |
841 | static void tb_page_check(void) | |
842 | { | |
843 | TranslationBlock *tb; | |
844 | int i, flags1, flags2; | |
3b46e624 | 845 | |
99773bd4 PB |
846 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
847 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { | |
fd6ce8f6 FB |
848 | flags1 = page_get_flags(tb->pc); |
849 | flags2 = page_get_flags(tb->pc + tb->size - 1); | |
850 | if ((flags1 & PAGE_WRITE) || (flags2 & PAGE_WRITE)) { | |
851 | printf("ERROR page flags: PC=%08lx size=%04x f1=%x f2=%x\n", | |
99773bd4 | 852 | (long)tb->pc, tb->size, flags1, flags2); |
fd6ce8f6 FB |
853 | } |
854 | } | |
855 | } | |
856 | } | |
857 | ||
858 | #endif | |
859 | ||
860 | /* invalidate one TB */ | |
861 | static inline void tb_remove(TranslationBlock **ptb, TranslationBlock *tb, | |
862 | int next_offset) | |
863 | { | |
864 | TranslationBlock *tb1; | |
865 | for(;;) { | |
866 | tb1 = *ptb; | |
867 | if (tb1 == tb) { | |
868 | *ptb = *(TranslationBlock **)((char *)tb1 + next_offset); | |
869 | break; | |
870 | } | |
871 | ptb = (TranslationBlock **)((char *)tb1 + next_offset); | |
872 | } | |
873 | } | |
874 | ||
9fa3e853 FB |
875 | static inline void tb_page_remove(TranslationBlock **ptb, TranslationBlock *tb) |
876 | { | |
877 | TranslationBlock *tb1; | |
878 | unsigned int n1; | |
879 | ||
880 | for(;;) { | |
881 | tb1 = *ptb; | |
8efe0ca8 SW |
882 | n1 = (uintptr_t)tb1 & 3; |
883 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); | |
9fa3e853 FB |
884 | if (tb1 == tb) { |
885 | *ptb = tb1->page_next[n1]; | |
886 | break; | |
887 | } | |
888 | ptb = &tb1->page_next[n1]; | |
889 | } | |
890 | } | |
891 | ||
d4e8164f FB |
892 | static inline void tb_jmp_remove(TranslationBlock *tb, int n) |
893 | { | |
894 | TranslationBlock *tb1, **ptb; | |
895 | unsigned int n1; | |
896 | ||
897 | ptb = &tb->jmp_next[n]; | |
898 | tb1 = *ptb; | |
899 | if (tb1) { | |
900 | /* find tb(n) in circular list */ | |
901 | for(;;) { | |
902 | tb1 = *ptb; | |
8efe0ca8 SW |
903 | n1 = (uintptr_t)tb1 & 3; |
904 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); | |
d4e8164f FB |
905 | if (n1 == n && tb1 == tb) |
906 | break; | |
907 | if (n1 == 2) { | |
908 | ptb = &tb1->jmp_first; | |
909 | } else { | |
910 | ptb = &tb1->jmp_next[n1]; | |
911 | } | |
912 | } | |
913 | /* now we can suppress tb(n) from the list */ | |
914 | *ptb = tb->jmp_next[n]; | |
915 | ||
916 | tb->jmp_next[n] = NULL; | |
917 | } | |
918 | } | |
919 | ||
920 | /* reset the jump entry 'n' of a TB so that it is not chained to | |
921 | another TB */ | |
922 | static inline void tb_reset_jump(TranslationBlock *tb, int n) | |
923 | { | |
8efe0ca8 | 924 | tb_set_jmp_target(tb, n, (uintptr_t)(tb->tc_ptr + tb->tb_next_offset[n])); |
d4e8164f FB |
925 | } |
926 | ||
41c1b1c9 | 927 | void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr) |
fd6ce8f6 | 928 | { |
9349b4f9 | 929 | CPUArchState *env; |
8a40a180 | 930 | PageDesc *p; |
d4e8164f | 931 | unsigned int h, n1; |
41c1b1c9 | 932 | tb_page_addr_t phys_pc; |
8a40a180 | 933 | TranslationBlock *tb1, *tb2; |
3b46e624 | 934 | |
8a40a180 FB |
935 | /* remove the TB from the hash list */ |
936 | phys_pc = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); | |
937 | h = tb_phys_hash_func(phys_pc); | |
5fafdf24 | 938 | tb_remove(&tb_phys_hash[h], tb, |
8a40a180 FB |
939 | offsetof(TranslationBlock, phys_hash_next)); |
940 | ||
941 | /* remove the TB from the page list */ | |
942 | if (tb->page_addr[0] != page_addr) { | |
943 | p = page_find(tb->page_addr[0] >> TARGET_PAGE_BITS); | |
944 | tb_page_remove(&p->first_tb, tb); | |
945 | invalidate_page_bitmap(p); | |
946 | } | |
947 | if (tb->page_addr[1] != -1 && tb->page_addr[1] != page_addr) { | |
948 | p = page_find(tb->page_addr[1] >> TARGET_PAGE_BITS); | |
949 | tb_page_remove(&p->first_tb, tb); | |
950 | invalidate_page_bitmap(p); | |
951 | } | |
952 | ||
36bdbe54 | 953 | tb_invalidated_flag = 1; |
59817ccb | 954 | |
fd6ce8f6 | 955 | /* remove the TB from the hash list */ |
8a40a180 | 956 | h = tb_jmp_cache_hash_func(tb->pc); |
6a00d601 FB |
957 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
958 | if (env->tb_jmp_cache[h] == tb) | |
959 | env->tb_jmp_cache[h] = NULL; | |
960 | } | |
d4e8164f FB |
961 | |
962 | /* suppress this TB from the two jump lists */ | |
963 | tb_jmp_remove(tb, 0); | |
964 | tb_jmp_remove(tb, 1); | |
965 | ||
966 | /* suppress any remaining jumps to this TB */ | |
967 | tb1 = tb->jmp_first; | |
968 | for(;;) { | |
8efe0ca8 | 969 | n1 = (uintptr_t)tb1 & 3; |
d4e8164f FB |
970 | if (n1 == 2) |
971 | break; | |
8efe0ca8 | 972 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); |
d4e8164f FB |
973 | tb2 = tb1->jmp_next[n1]; |
974 | tb_reset_jump(tb1, n1); | |
975 | tb1->jmp_next[n1] = NULL; | |
976 | tb1 = tb2; | |
977 | } | |
8efe0ca8 | 978 | tb->jmp_first = (TranslationBlock *)((uintptr_t)tb | 2); /* fail safe */ |
9fa3e853 | 979 | |
e3db7226 | 980 | tb_phys_invalidate_count++; |
9fa3e853 FB |
981 | } |
982 | ||
983 | static inline void set_bits(uint8_t *tab, int start, int len) | |
984 | { | |
985 | int end, mask, end1; | |
986 | ||
987 | end = start + len; | |
988 | tab += start >> 3; | |
989 | mask = 0xff << (start & 7); | |
990 | if ((start & ~7) == (end & ~7)) { | |
991 | if (start < end) { | |
992 | mask &= ~(0xff << (end & 7)); | |
993 | *tab |= mask; | |
994 | } | |
995 | } else { | |
996 | *tab++ |= mask; | |
997 | start = (start + 8) & ~7; | |
998 | end1 = end & ~7; | |
999 | while (start < end1) { | |
1000 | *tab++ = 0xff; | |
1001 | start += 8; | |
1002 | } | |
1003 | if (start < end) { | |
1004 | mask = ~(0xff << (end & 7)); | |
1005 | *tab |= mask; | |
1006 | } | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | static void build_page_bitmap(PageDesc *p) | |
1011 | { | |
1012 | int n, tb_start, tb_end; | |
1013 | TranslationBlock *tb; | |
3b46e624 | 1014 | |
7267c094 | 1015 | p->code_bitmap = g_malloc0(TARGET_PAGE_SIZE / 8); |
9fa3e853 FB |
1016 | |
1017 | tb = p->first_tb; | |
1018 | while (tb != NULL) { | |
8efe0ca8 SW |
1019 | n = (uintptr_t)tb & 3; |
1020 | tb = (TranslationBlock *)((uintptr_t)tb & ~3); | |
9fa3e853 FB |
1021 | /* NOTE: this is subtle as a TB may span two physical pages */ |
1022 | if (n == 0) { | |
1023 | /* NOTE: tb_end may be after the end of the page, but | |
1024 | it is not a problem */ | |
1025 | tb_start = tb->pc & ~TARGET_PAGE_MASK; | |
1026 | tb_end = tb_start + tb->size; | |
1027 | if (tb_end > TARGET_PAGE_SIZE) | |
1028 | tb_end = TARGET_PAGE_SIZE; | |
1029 | } else { | |
1030 | tb_start = 0; | |
1031 | tb_end = ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); | |
1032 | } | |
1033 | set_bits(p->code_bitmap, tb_start, tb_end - tb_start); | |
1034 | tb = tb->page_next[n]; | |
1035 | } | |
1036 | } | |
1037 | ||
9349b4f9 | 1038 | TranslationBlock *tb_gen_code(CPUArchState *env, |
2e70f6ef PB |
1039 | target_ulong pc, target_ulong cs_base, |
1040 | int flags, int cflags) | |
d720b93d FB |
1041 | { |
1042 | TranslationBlock *tb; | |
1043 | uint8_t *tc_ptr; | |
41c1b1c9 PB |
1044 | tb_page_addr_t phys_pc, phys_page2; |
1045 | target_ulong virt_page2; | |
d720b93d FB |
1046 | int code_gen_size; |
1047 | ||
41c1b1c9 | 1048 | phys_pc = get_page_addr_code(env, pc); |
c27004ec | 1049 | tb = tb_alloc(pc); |
d720b93d FB |
1050 | if (!tb) { |
1051 | /* flush must be done */ | |
1052 | tb_flush(env); | |
1053 | /* cannot fail at this point */ | |
c27004ec | 1054 | tb = tb_alloc(pc); |
2e70f6ef PB |
1055 | /* Don't forget to invalidate previous TB info. */ |
1056 | tb_invalidated_flag = 1; | |
d720b93d FB |
1057 | } |
1058 | tc_ptr = code_gen_ptr; | |
1059 | tb->tc_ptr = tc_ptr; | |
1060 | tb->cs_base = cs_base; | |
1061 | tb->flags = flags; | |
1062 | tb->cflags = cflags; | |
d07bde88 | 1063 | cpu_gen_code(env, tb, &code_gen_size); |
8efe0ca8 SW |
1064 | code_gen_ptr = (void *)(((uintptr_t)code_gen_ptr + code_gen_size + |
1065 | CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); | |
3b46e624 | 1066 | |
d720b93d | 1067 | /* check next page if needed */ |
c27004ec | 1068 | virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK; |
d720b93d | 1069 | phys_page2 = -1; |
c27004ec | 1070 | if ((pc & TARGET_PAGE_MASK) != virt_page2) { |
41c1b1c9 | 1071 | phys_page2 = get_page_addr_code(env, virt_page2); |
d720b93d | 1072 | } |
41c1b1c9 | 1073 | tb_link_page(tb, phys_pc, phys_page2); |
2e70f6ef | 1074 | return tb; |
d720b93d | 1075 | } |
3b46e624 | 1076 | |
77a8f1a5 | 1077 | /* |
8e0fdce3 JK |
1078 | * Invalidate all TBs which intersect with the target physical address range |
1079 | * [start;end[. NOTE: start and end may refer to *different* physical pages. | |
1080 | * 'is_cpu_write_access' should be true if called from a real cpu write | |
1081 | * access: the virtual CPU will exit the current TB if code is modified inside | |
1082 | * this TB. | |
77a8f1a5 AG |
1083 | */ |
1084 | void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end, | |
1085 | int is_cpu_write_access) | |
1086 | { | |
1087 | while (start < end) { | |
1088 | tb_invalidate_phys_page_range(start, end, is_cpu_write_access); | |
1089 | start &= TARGET_PAGE_MASK; | |
1090 | start += TARGET_PAGE_SIZE; | |
1091 | } | |
1092 | } | |
1093 | ||
8e0fdce3 JK |
1094 | /* |
1095 | * Invalidate all TBs which intersect with the target physical address range | |
1096 | * [start;end[. NOTE: start and end must refer to the *same* physical page. | |
1097 | * 'is_cpu_write_access' should be true if called from a real cpu write | |
1098 | * access: the virtual CPU will exit the current TB if code is modified inside | |
1099 | * this TB. | |
1100 | */ | |
41c1b1c9 | 1101 | void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end, |
d720b93d FB |
1102 | int is_cpu_write_access) |
1103 | { | |
6b917547 | 1104 | TranslationBlock *tb, *tb_next, *saved_tb; |
9349b4f9 | 1105 | CPUArchState *env = cpu_single_env; |
41c1b1c9 | 1106 | tb_page_addr_t tb_start, tb_end; |
6b917547 AL |
1107 | PageDesc *p; |
1108 | int n; | |
1109 | #ifdef TARGET_HAS_PRECISE_SMC | |
1110 | int current_tb_not_found = is_cpu_write_access; | |
1111 | TranslationBlock *current_tb = NULL; | |
1112 | int current_tb_modified = 0; | |
1113 | target_ulong current_pc = 0; | |
1114 | target_ulong current_cs_base = 0; | |
1115 | int current_flags = 0; | |
1116 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
9fa3e853 FB |
1117 | |
1118 | p = page_find(start >> TARGET_PAGE_BITS); | |
5fafdf24 | 1119 | if (!p) |
9fa3e853 | 1120 | return; |
5fafdf24 | 1121 | if (!p->code_bitmap && |
d720b93d FB |
1122 | ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD && |
1123 | is_cpu_write_access) { | |
9fa3e853 FB |
1124 | /* build code bitmap */ |
1125 | build_page_bitmap(p); | |
1126 | } | |
1127 | ||
1128 | /* we remove all the TBs in the range [start, end[ */ | |
1129 | /* XXX: see if in some cases it could be faster to invalidate all the code */ | |
1130 | tb = p->first_tb; | |
1131 | while (tb != NULL) { | |
8efe0ca8 SW |
1132 | n = (uintptr_t)tb & 3; |
1133 | tb = (TranslationBlock *)((uintptr_t)tb & ~3); | |
9fa3e853 FB |
1134 | tb_next = tb->page_next[n]; |
1135 | /* NOTE: this is subtle as a TB may span two physical pages */ | |
1136 | if (n == 0) { | |
1137 | /* NOTE: tb_end may be after the end of the page, but | |
1138 | it is not a problem */ | |
1139 | tb_start = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); | |
1140 | tb_end = tb_start + tb->size; | |
1141 | } else { | |
1142 | tb_start = tb->page_addr[1]; | |
1143 | tb_end = tb_start + ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); | |
1144 | } | |
1145 | if (!(tb_end <= start || tb_start >= end)) { | |
d720b93d FB |
1146 | #ifdef TARGET_HAS_PRECISE_SMC |
1147 | if (current_tb_not_found) { | |
1148 | current_tb_not_found = 0; | |
1149 | current_tb = NULL; | |
2e70f6ef | 1150 | if (env->mem_io_pc) { |
d720b93d | 1151 | /* now we have a real cpu fault */ |
2e70f6ef | 1152 | current_tb = tb_find_pc(env->mem_io_pc); |
d720b93d FB |
1153 | } |
1154 | } | |
1155 | if (current_tb == tb && | |
2e70f6ef | 1156 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
d720b93d FB |
1157 | /* If we are modifying the current TB, we must stop |
1158 | its execution. We could be more precise by checking | |
1159 | that the modification is after the current PC, but it | |
1160 | would require a specialized function to partially | |
1161 | restore the CPU state */ | |
3b46e624 | 1162 | |
d720b93d | 1163 | current_tb_modified = 1; |
618ba8e6 | 1164 | cpu_restore_state(current_tb, env, env->mem_io_pc); |
6b917547 AL |
1165 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
1166 | ¤t_flags); | |
d720b93d FB |
1167 | } |
1168 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
6f5a9f7e FB |
1169 | /* we need to do that to handle the case where a signal |
1170 | occurs while doing tb_phys_invalidate() */ | |
1171 | saved_tb = NULL; | |
1172 | if (env) { | |
1173 | saved_tb = env->current_tb; | |
1174 | env->current_tb = NULL; | |
1175 | } | |
9fa3e853 | 1176 | tb_phys_invalidate(tb, -1); |
6f5a9f7e FB |
1177 | if (env) { |
1178 | env->current_tb = saved_tb; | |
1179 | if (env->interrupt_request && env->current_tb) | |
1180 | cpu_interrupt(env, env->interrupt_request); | |
1181 | } | |
9fa3e853 FB |
1182 | } |
1183 | tb = tb_next; | |
1184 | } | |
1185 | #if !defined(CONFIG_USER_ONLY) | |
1186 | /* if no code remaining, no need to continue to use slow writes */ | |
1187 | if (!p->first_tb) { | |
1188 | invalidate_page_bitmap(p); | |
d720b93d | 1189 | if (is_cpu_write_access) { |
2e70f6ef | 1190 | tlb_unprotect_code_phys(env, start, env->mem_io_vaddr); |
d720b93d FB |
1191 | } |
1192 | } | |
1193 | #endif | |
1194 | #ifdef TARGET_HAS_PRECISE_SMC | |
1195 | if (current_tb_modified) { | |
1196 | /* we generate a block containing just the instruction | |
1197 | modifying the memory. It will ensure that it cannot modify | |
1198 | itself */ | |
ea1c1802 | 1199 | env->current_tb = NULL; |
2e70f6ef | 1200 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
d720b93d | 1201 | cpu_resume_from_signal(env, NULL); |
9fa3e853 | 1202 | } |
fd6ce8f6 | 1203 | #endif |
9fa3e853 | 1204 | } |
fd6ce8f6 | 1205 | |
9fa3e853 | 1206 | /* len must be <= 8 and start must be a multiple of len */ |
41c1b1c9 | 1207 | static inline void tb_invalidate_phys_page_fast(tb_page_addr_t start, int len) |
9fa3e853 FB |
1208 | { |
1209 | PageDesc *p; | |
1210 | int offset, b; | |
59817ccb | 1211 | #if 0 |
a4193c8a | 1212 | if (1) { |
93fcfe39 AL |
1213 | qemu_log("modifying code at 0x%x size=%d EIP=%x PC=%08x\n", |
1214 | cpu_single_env->mem_io_vaddr, len, | |
1215 | cpu_single_env->eip, | |
8efe0ca8 SW |
1216 | cpu_single_env->eip + |
1217 | (intptr_t)cpu_single_env->segs[R_CS].base); | |
59817ccb FB |
1218 | } |
1219 | #endif | |
9fa3e853 | 1220 | p = page_find(start >> TARGET_PAGE_BITS); |
5fafdf24 | 1221 | if (!p) |
9fa3e853 FB |
1222 | return; |
1223 | if (p->code_bitmap) { | |
1224 | offset = start & ~TARGET_PAGE_MASK; | |
1225 | b = p->code_bitmap[offset >> 3] >> (offset & 7); | |
1226 | if (b & ((1 << len) - 1)) | |
1227 | goto do_invalidate; | |
1228 | } else { | |
1229 | do_invalidate: | |
d720b93d | 1230 | tb_invalidate_phys_page_range(start, start + len, 1); |
9fa3e853 FB |
1231 | } |
1232 | } | |
1233 | ||
9fa3e853 | 1234 | #if !defined(CONFIG_SOFTMMU) |
41c1b1c9 | 1235 | static void tb_invalidate_phys_page(tb_page_addr_t addr, |
20503968 | 1236 | uintptr_t pc, void *puc) |
9fa3e853 | 1237 | { |
6b917547 | 1238 | TranslationBlock *tb; |
9fa3e853 | 1239 | PageDesc *p; |
6b917547 | 1240 | int n; |
d720b93d | 1241 | #ifdef TARGET_HAS_PRECISE_SMC |
6b917547 | 1242 | TranslationBlock *current_tb = NULL; |
9349b4f9 | 1243 | CPUArchState *env = cpu_single_env; |
6b917547 AL |
1244 | int current_tb_modified = 0; |
1245 | target_ulong current_pc = 0; | |
1246 | target_ulong current_cs_base = 0; | |
1247 | int current_flags = 0; | |
d720b93d | 1248 | #endif |
9fa3e853 FB |
1249 | |
1250 | addr &= TARGET_PAGE_MASK; | |
1251 | p = page_find(addr >> TARGET_PAGE_BITS); | |
5fafdf24 | 1252 | if (!p) |
9fa3e853 FB |
1253 | return; |
1254 | tb = p->first_tb; | |
d720b93d FB |
1255 | #ifdef TARGET_HAS_PRECISE_SMC |
1256 | if (tb && pc != 0) { | |
1257 | current_tb = tb_find_pc(pc); | |
1258 | } | |
1259 | #endif | |
9fa3e853 | 1260 | while (tb != NULL) { |
8efe0ca8 SW |
1261 | n = (uintptr_t)tb & 3; |
1262 | tb = (TranslationBlock *)((uintptr_t)tb & ~3); | |
d720b93d FB |
1263 | #ifdef TARGET_HAS_PRECISE_SMC |
1264 | if (current_tb == tb && | |
2e70f6ef | 1265 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
d720b93d FB |
1266 | /* If we are modifying the current TB, we must stop |
1267 | its execution. We could be more precise by checking | |
1268 | that the modification is after the current PC, but it | |
1269 | would require a specialized function to partially | |
1270 | restore the CPU state */ | |
3b46e624 | 1271 | |
d720b93d | 1272 | current_tb_modified = 1; |
618ba8e6 | 1273 | cpu_restore_state(current_tb, env, pc); |
6b917547 AL |
1274 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
1275 | ¤t_flags); | |
d720b93d FB |
1276 | } |
1277 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
9fa3e853 FB |
1278 | tb_phys_invalidate(tb, addr); |
1279 | tb = tb->page_next[n]; | |
1280 | } | |
fd6ce8f6 | 1281 | p->first_tb = NULL; |
d720b93d FB |
1282 | #ifdef TARGET_HAS_PRECISE_SMC |
1283 | if (current_tb_modified) { | |
1284 | /* we generate a block containing just the instruction | |
1285 | modifying the memory. It will ensure that it cannot modify | |
1286 | itself */ | |
ea1c1802 | 1287 | env->current_tb = NULL; |
2e70f6ef | 1288 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
d720b93d FB |
1289 | cpu_resume_from_signal(env, puc); |
1290 | } | |
1291 | #endif | |
fd6ce8f6 | 1292 | } |
9fa3e853 | 1293 | #endif |
fd6ce8f6 FB |
1294 | |
1295 | /* add the tb in the target page and protect it if necessary */ | |
5fafdf24 | 1296 | static inline void tb_alloc_page(TranslationBlock *tb, |
41c1b1c9 | 1297 | unsigned int n, tb_page_addr_t page_addr) |
fd6ce8f6 FB |
1298 | { |
1299 | PageDesc *p; | |
4429ab44 JQ |
1300 | #ifndef CONFIG_USER_ONLY |
1301 | bool page_already_protected; | |
1302 | #endif | |
9fa3e853 FB |
1303 | |
1304 | tb->page_addr[n] = page_addr; | |
5cd2c5b6 | 1305 | p = page_find_alloc(page_addr >> TARGET_PAGE_BITS, 1); |
9fa3e853 | 1306 | tb->page_next[n] = p->first_tb; |
4429ab44 JQ |
1307 | #ifndef CONFIG_USER_ONLY |
1308 | page_already_protected = p->first_tb != NULL; | |
1309 | #endif | |
8efe0ca8 | 1310 | p->first_tb = (TranslationBlock *)((uintptr_t)tb | n); |
9fa3e853 | 1311 | invalidate_page_bitmap(p); |
fd6ce8f6 | 1312 | |
107db443 | 1313 | #if defined(TARGET_HAS_SMC) || 1 |
d720b93d | 1314 | |
9fa3e853 | 1315 | #if defined(CONFIG_USER_ONLY) |
fd6ce8f6 | 1316 | if (p->flags & PAGE_WRITE) { |
53a5960a PB |
1317 | target_ulong addr; |
1318 | PageDesc *p2; | |
9fa3e853 FB |
1319 | int prot; |
1320 | ||
fd6ce8f6 FB |
1321 | /* force the host page as non writable (writes will have a |
1322 | page fault + mprotect overhead) */ | |
53a5960a | 1323 | page_addr &= qemu_host_page_mask; |
fd6ce8f6 | 1324 | prot = 0; |
53a5960a PB |
1325 | for(addr = page_addr; addr < page_addr + qemu_host_page_size; |
1326 | addr += TARGET_PAGE_SIZE) { | |
1327 | ||
1328 | p2 = page_find (addr >> TARGET_PAGE_BITS); | |
1329 | if (!p2) | |
1330 | continue; | |
1331 | prot |= p2->flags; | |
1332 | p2->flags &= ~PAGE_WRITE; | |
53a5960a | 1333 | } |
5fafdf24 | 1334 | mprotect(g2h(page_addr), qemu_host_page_size, |
fd6ce8f6 FB |
1335 | (prot & PAGE_BITS) & ~PAGE_WRITE); |
1336 | #ifdef DEBUG_TB_INVALIDATE | |
ab3d1727 | 1337 | printf("protecting code page: 0x" TARGET_FMT_lx "\n", |
53a5960a | 1338 | page_addr); |
fd6ce8f6 | 1339 | #endif |
fd6ce8f6 | 1340 | } |
9fa3e853 FB |
1341 | #else |
1342 | /* if some code is already present, then the pages are already | |
1343 | protected. So we handle the case where only the first TB is | |
1344 | allocated in a physical page */ | |
4429ab44 | 1345 | if (!page_already_protected) { |
6a00d601 | 1346 | tlb_protect_code(page_addr); |
9fa3e853 FB |
1347 | } |
1348 | #endif | |
d720b93d FB |
1349 | |
1350 | #endif /* TARGET_HAS_SMC */ | |
fd6ce8f6 FB |
1351 | } |
1352 | ||
9fa3e853 FB |
1353 | /* add a new TB and link it to the physical page tables. phys_page2 is |
1354 | (-1) to indicate that only one page contains the TB. */ | |
41c1b1c9 PB |
1355 | void tb_link_page(TranslationBlock *tb, |
1356 | tb_page_addr_t phys_pc, tb_page_addr_t phys_page2) | |
d4e8164f | 1357 | { |
9fa3e853 FB |
1358 | unsigned int h; |
1359 | TranslationBlock **ptb; | |
1360 | ||
c8a706fe PB |
1361 | /* Grab the mmap lock to stop another thread invalidating this TB |
1362 | before we are done. */ | |
1363 | mmap_lock(); | |
9fa3e853 FB |
1364 | /* add in the physical hash table */ |
1365 | h = tb_phys_hash_func(phys_pc); | |
1366 | ptb = &tb_phys_hash[h]; | |
1367 | tb->phys_hash_next = *ptb; | |
1368 | *ptb = tb; | |
fd6ce8f6 FB |
1369 | |
1370 | /* add in the page list */ | |
9fa3e853 FB |
1371 | tb_alloc_page(tb, 0, phys_pc & TARGET_PAGE_MASK); |
1372 | if (phys_page2 != -1) | |
1373 | tb_alloc_page(tb, 1, phys_page2); | |
1374 | else | |
1375 | tb->page_addr[1] = -1; | |
9fa3e853 | 1376 | |
8efe0ca8 | 1377 | tb->jmp_first = (TranslationBlock *)((uintptr_t)tb | 2); |
d4e8164f FB |
1378 | tb->jmp_next[0] = NULL; |
1379 | tb->jmp_next[1] = NULL; | |
1380 | ||
1381 | /* init original jump addresses */ | |
1382 | if (tb->tb_next_offset[0] != 0xffff) | |
1383 | tb_reset_jump(tb, 0); | |
1384 | if (tb->tb_next_offset[1] != 0xffff) | |
1385 | tb_reset_jump(tb, 1); | |
8a40a180 FB |
1386 | |
1387 | #ifdef DEBUG_TB_CHECK | |
1388 | tb_page_check(); | |
1389 | #endif | |
c8a706fe | 1390 | mmap_unlock(); |
fd6ce8f6 FB |
1391 | } |
1392 | ||
9fa3e853 FB |
1393 | /* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr < |
1394 | tb[1].tc_ptr. Return NULL if not found */ | |
6375e09e | 1395 | TranslationBlock *tb_find_pc(uintptr_t tc_ptr) |
fd6ce8f6 | 1396 | { |
9fa3e853 | 1397 | int m_min, m_max, m; |
8efe0ca8 | 1398 | uintptr_t v; |
9fa3e853 | 1399 | TranslationBlock *tb; |
a513fe19 FB |
1400 | |
1401 | if (nb_tbs <= 0) | |
1402 | return NULL; | |
8efe0ca8 SW |
1403 | if (tc_ptr < (uintptr_t)code_gen_buffer || |
1404 | tc_ptr >= (uintptr_t)code_gen_ptr) { | |
a513fe19 | 1405 | return NULL; |
8efe0ca8 | 1406 | } |
a513fe19 FB |
1407 | /* binary search (cf Knuth) */ |
1408 | m_min = 0; | |
1409 | m_max = nb_tbs - 1; | |
1410 | while (m_min <= m_max) { | |
1411 | m = (m_min + m_max) >> 1; | |
1412 | tb = &tbs[m]; | |
8efe0ca8 | 1413 | v = (uintptr_t)tb->tc_ptr; |
a513fe19 FB |
1414 | if (v == tc_ptr) |
1415 | return tb; | |
1416 | else if (tc_ptr < v) { | |
1417 | m_max = m - 1; | |
1418 | } else { | |
1419 | m_min = m + 1; | |
1420 | } | |
5fafdf24 | 1421 | } |
a513fe19 FB |
1422 | return &tbs[m_max]; |
1423 | } | |
7501267e | 1424 | |
ea041c0e FB |
1425 | static void tb_reset_jump_recursive(TranslationBlock *tb); |
1426 | ||
1427 | static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n) | |
1428 | { | |
1429 | TranslationBlock *tb1, *tb_next, **ptb; | |
1430 | unsigned int n1; | |
1431 | ||
1432 | tb1 = tb->jmp_next[n]; | |
1433 | if (tb1 != NULL) { | |
1434 | /* find head of list */ | |
1435 | for(;;) { | |
8efe0ca8 SW |
1436 | n1 = (uintptr_t)tb1 & 3; |
1437 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); | |
ea041c0e FB |
1438 | if (n1 == 2) |
1439 | break; | |
1440 | tb1 = tb1->jmp_next[n1]; | |
1441 | } | |
1442 | /* we are now sure now that tb jumps to tb1 */ | |
1443 | tb_next = tb1; | |
1444 | ||
1445 | /* remove tb from the jmp_first list */ | |
1446 | ptb = &tb_next->jmp_first; | |
1447 | for(;;) { | |
1448 | tb1 = *ptb; | |
8efe0ca8 SW |
1449 | n1 = (uintptr_t)tb1 & 3; |
1450 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); | |
ea041c0e FB |
1451 | if (n1 == n && tb1 == tb) |
1452 | break; | |
1453 | ptb = &tb1->jmp_next[n1]; | |
1454 | } | |
1455 | *ptb = tb->jmp_next[n]; | |
1456 | tb->jmp_next[n] = NULL; | |
3b46e624 | 1457 | |
ea041c0e FB |
1458 | /* suppress the jump to next tb in generated code */ |
1459 | tb_reset_jump(tb, n); | |
1460 | ||
0124311e | 1461 | /* suppress jumps in the tb on which we could have jumped */ |
ea041c0e FB |
1462 | tb_reset_jump_recursive(tb_next); |
1463 | } | |
1464 | } | |
1465 | ||
1466 | static void tb_reset_jump_recursive(TranslationBlock *tb) | |
1467 | { | |
1468 | tb_reset_jump_recursive2(tb, 0); | |
1469 | tb_reset_jump_recursive2(tb, 1); | |
1470 | } | |
1471 | ||
1fddef4b | 1472 | #if defined(TARGET_HAS_ICE) |
94df27fd | 1473 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 1474 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) |
94df27fd PB |
1475 | { |
1476 | tb_invalidate_phys_page_range(pc, pc + 1, 0); | |
1477 | } | |
1478 | #else | |
a8170e5e | 1479 | void tb_invalidate_phys_addr(hwaddr addr) |
d720b93d | 1480 | { |
c227f099 | 1481 | ram_addr_t ram_addr; |
f3705d53 | 1482 | MemoryRegionSection *section; |
d720b93d | 1483 | |
ac1970fb | 1484 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
f3705d53 AK |
1485 | if (!(memory_region_is_ram(section->mr) |
1486 | || (section->mr->rom_device && section->mr->readable))) { | |
06ef3525 AK |
1487 | return; |
1488 | } | |
f3705d53 | 1489 | ram_addr = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) |
cc5bea60 | 1490 | + memory_region_section_addr(section, addr); |
706cd4b5 | 1491 | tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0); |
d720b93d | 1492 | } |
1e7855a5 MF |
1493 | |
1494 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) | |
1495 | { | |
9d70c4b7 MF |
1496 | tb_invalidate_phys_addr(cpu_get_phys_page_debug(env, pc) | |
1497 | (pc & ~TARGET_PAGE_MASK)); | |
1e7855a5 | 1498 | } |
c27004ec | 1499 | #endif |
94df27fd | 1500 | #endif /* TARGET_HAS_ICE */ |
d720b93d | 1501 | |
c527ee8f | 1502 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 1503 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
c527ee8f PB |
1504 | |
1505 | { | |
1506 | } | |
1507 | ||
9349b4f9 | 1508 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
c527ee8f PB |
1509 | int flags, CPUWatchpoint **watchpoint) |
1510 | { | |
1511 | return -ENOSYS; | |
1512 | } | |
1513 | #else | |
6658ffb8 | 1514 | /* Add a watchpoint. */ |
9349b4f9 | 1515 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 1516 | int flags, CPUWatchpoint **watchpoint) |
6658ffb8 | 1517 | { |
b4051334 | 1518 | target_ulong len_mask = ~(len - 1); |
c0ce998e | 1519 | CPUWatchpoint *wp; |
6658ffb8 | 1520 | |
b4051334 | 1521 | /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */ |
0dc23828 MF |
1522 | if ((len & (len - 1)) || (addr & ~len_mask) || |
1523 | len == 0 || len > TARGET_PAGE_SIZE) { | |
b4051334 AL |
1524 | fprintf(stderr, "qemu: tried to set invalid watchpoint at " |
1525 | TARGET_FMT_lx ", len=" TARGET_FMT_lu "\n", addr, len); | |
1526 | return -EINVAL; | |
1527 | } | |
7267c094 | 1528 | wp = g_malloc(sizeof(*wp)); |
a1d1bb31 AL |
1529 | |
1530 | wp->vaddr = addr; | |
b4051334 | 1531 | wp->len_mask = len_mask; |
a1d1bb31 AL |
1532 | wp->flags = flags; |
1533 | ||
2dc9f411 | 1534 | /* keep all GDB-injected watchpoints in front */ |
c0ce998e | 1535 | if (flags & BP_GDB) |
72cf2d4f | 1536 | QTAILQ_INSERT_HEAD(&env->watchpoints, wp, entry); |
c0ce998e | 1537 | else |
72cf2d4f | 1538 | QTAILQ_INSERT_TAIL(&env->watchpoints, wp, entry); |
6658ffb8 | 1539 | |
6658ffb8 | 1540 | tlb_flush_page(env, addr); |
a1d1bb31 AL |
1541 | |
1542 | if (watchpoint) | |
1543 | *watchpoint = wp; | |
1544 | return 0; | |
6658ffb8 PB |
1545 | } |
1546 | ||
a1d1bb31 | 1547 | /* Remove a specific watchpoint. */ |
9349b4f9 | 1548 | int cpu_watchpoint_remove(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 1549 | int flags) |
6658ffb8 | 1550 | { |
b4051334 | 1551 | target_ulong len_mask = ~(len - 1); |
a1d1bb31 | 1552 | CPUWatchpoint *wp; |
6658ffb8 | 1553 | |
72cf2d4f | 1554 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 | 1555 | if (addr == wp->vaddr && len_mask == wp->len_mask |
6e140f28 | 1556 | && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) { |
a1d1bb31 | 1557 | cpu_watchpoint_remove_by_ref(env, wp); |
6658ffb8 PB |
1558 | return 0; |
1559 | } | |
1560 | } | |
a1d1bb31 | 1561 | return -ENOENT; |
6658ffb8 PB |
1562 | } |
1563 | ||
a1d1bb31 | 1564 | /* Remove a specific watchpoint by reference. */ |
9349b4f9 | 1565 | void cpu_watchpoint_remove_by_ref(CPUArchState *env, CPUWatchpoint *watchpoint) |
a1d1bb31 | 1566 | { |
72cf2d4f | 1567 | QTAILQ_REMOVE(&env->watchpoints, watchpoint, entry); |
7d03f82f | 1568 | |
a1d1bb31 AL |
1569 | tlb_flush_page(env, watchpoint->vaddr); |
1570 | ||
7267c094 | 1571 | g_free(watchpoint); |
a1d1bb31 AL |
1572 | } |
1573 | ||
1574 | /* Remove all matching watchpoints. */ | |
9349b4f9 | 1575 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 | 1576 | { |
c0ce998e | 1577 | CPUWatchpoint *wp, *next; |
a1d1bb31 | 1578 | |
72cf2d4f | 1579 | QTAILQ_FOREACH_SAFE(wp, &env->watchpoints, entry, next) { |
a1d1bb31 AL |
1580 | if (wp->flags & mask) |
1581 | cpu_watchpoint_remove_by_ref(env, wp); | |
c0ce998e | 1582 | } |
7d03f82f | 1583 | } |
c527ee8f | 1584 | #endif |
7d03f82f | 1585 | |
a1d1bb31 | 1586 | /* Add a breakpoint. */ |
9349b4f9 | 1587 | int cpu_breakpoint_insert(CPUArchState *env, target_ulong pc, int flags, |
a1d1bb31 | 1588 | CPUBreakpoint **breakpoint) |
4c3a88a2 | 1589 | { |
1fddef4b | 1590 | #if defined(TARGET_HAS_ICE) |
c0ce998e | 1591 | CPUBreakpoint *bp; |
3b46e624 | 1592 | |
7267c094 | 1593 | bp = g_malloc(sizeof(*bp)); |
4c3a88a2 | 1594 | |
a1d1bb31 AL |
1595 | bp->pc = pc; |
1596 | bp->flags = flags; | |
1597 | ||
2dc9f411 | 1598 | /* keep all GDB-injected breakpoints in front */ |
c0ce998e | 1599 | if (flags & BP_GDB) |
72cf2d4f | 1600 | QTAILQ_INSERT_HEAD(&env->breakpoints, bp, entry); |
c0ce998e | 1601 | else |
72cf2d4f | 1602 | QTAILQ_INSERT_TAIL(&env->breakpoints, bp, entry); |
3b46e624 | 1603 | |
d720b93d | 1604 | breakpoint_invalidate(env, pc); |
a1d1bb31 AL |
1605 | |
1606 | if (breakpoint) | |
1607 | *breakpoint = bp; | |
4c3a88a2 FB |
1608 | return 0; |
1609 | #else | |
a1d1bb31 | 1610 | return -ENOSYS; |
4c3a88a2 FB |
1611 | #endif |
1612 | } | |
1613 | ||
a1d1bb31 | 1614 | /* Remove a specific breakpoint. */ |
9349b4f9 | 1615 | int cpu_breakpoint_remove(CPUArchState *env, target_ulong pc, int flags) |
a1d1bb31 | 1616 | { |
7d03f82f | 1617 | #if defined(TARGET_HAS_ICE) |
a1d1bb31 AL |
1618 | CPUBreakpoint *bp; |
1619 | ||
72cf2d4f | 1620 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
a1d1bb31 AL |
1621 | if (bp->pc == pc && bp->flags == flags) { |
1622 | cpu_breakpoint_remove_by_ref(env, bp); | |
1623 | return 0; | |
1624 | } | |
7d03f82f | 1625 | } |
a1d1bb31 AL |
1626 | return -ENOENT; |
1627 | #else | |
1628 | return -ENOSYS; | |
7d03f82f EI |
1629 | #endif |
1630 | } | |
1631 | ||
a1d1bb31 | 1632 | /* Remove a specific breakpoint by reference. */ |
9349b4f9 | 1633 | void cpu_breakpoint_remove_by_ref(CPUArchState *env, CPUBreakpoint *breakpoint) |
4c3a88a2 | 1634 | { |
1fddef4b | 1635 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 1636 | QTAILQ_REMOVE(&env->breakpoints, breakpoint, entry); |
d720b93d | 1637 | |
a1d1bb31 AL |
1638 | breakpoint_invalidate(env, breakpoint->pc); |
1639 | ||
7267c094 | 1640 | g_free(breakpoint); |
a1d1bb31 AL |
1641 | #endif |
1642 | } | |
1643 | ||
1644 | /* Remove all matching breakpoints. */ | |
9349b4f9 | 1645 | void cpu_breakpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 AL |
1646 | { |
1647 | #if defined(TARGET_HAS_ICE) | |
c0ce998e | 1648 | CPUBreakpoint *bp, *next; |
a1d1bb31 | 1649 | |
72cf2d4f | 1650 | QTAILQ_FOREACH_SAFE(bp, &env->breakpoints, entry, next) { |
a1d1bb31 AL |
1651 | if (bp->flags & mask) |
1652 | cpu_breakpoint_remove_by_ref(env, bp); | |
c0ce998e | 1653 | } |
4c3a88a2 FB |
1654 | #endif |
1655 | } | |
1656 | ||
c33a346e FB |
1657 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
1658 | CPU loop after each instruction */ | |
9349b4f9 | 1659 | void cpu_single_step(CPUArchState *env, int enabled) |
c33a346e | 1660 | { |
1fddef4b | 1661 | #if defined(TARGET_HAS_ICE) |
c33a346e FB |
1662 | if (env->singlestep_enabled != enabled) { |
1663 | env->singlestep_enabled = enabled; | |
e22a25c9 AL |
1664 | if (kvm_enabled()) |
1665 | kvm_update_guest_debug(env, 0); | |
1666 | else { | |
ccbb4d44 | 1667 | /* must flush all the translated code to avoid inconsistencies */ |
e22a25c9 AL |
1668 | /* XXX: only flush what is necessary */ |
1669 | tb_flush(env); | |
1670 | } | |
c33a346e FB |
1671 | } |
1672 | #endif | |
1673 | } | |
1674 | ||
9349b4f9 | 1675 | static void cpu_unlink_tb(CPUArchState *env) |
ea041c0e | 1676 | { |
3098dba0 AJ |
1677 | /* FIXME: TB unchaining isn't SMP safe. For now just ignore the |
1678 | problem and hope the cpu will stop of its own accord. For userspace | |
1679 | emulation this often isn't actually as bad as it sounds. Often | |
1680 | signals are used primarily to interrupt blocking syscalls. */ | |
ea041c0e | 1681 | TranslationBlock *tb; |
c227f099 | 1682 | static spinlock_t interrupt_lock = SPIN_LOCK_UNLOCKED; |
59817ccb | 1683 | |
cab1b4bd | 1684 | spin_lock(&interrupt_lock); |
3098dba0 AJ |
1685 | tb = env->current_tb; |
1686 | /* if the cpu is currently executing code, we must unlink it and | |
1687 | all the potentially executing TB */ | |
f76cfe56 | 1688 | if (tb) { |
3098dba0 AJ |
1689 | env->current_tb = NULL; |
1690 | tb_reset_jump_recursive(tb); | |
be214e6c | 1691 | } |
cab1b4bd | 1692 | spin_unlock(&interrupt_lock); |
3098dba0 AJ |
1693 | } |
1694 | ||
97ffbd8d | 1695 | #ifndef CONFIG_USER_ONLY |
3098dba0 | 1696 | /* mask must never be zero, except for A20 change call */ |
9349b4f9 | 1697 | static void tcg_handle_interrupt(CPUArchState *env, int mask) |
3098dba0 | 1698 | { |
60e82579 | 1699 | CPUState *cpu = ENV_GET_CPU(env); |
3098dba0 | 1700 | int old_mask; |
be214e6c | 1701 | |
2e70f6ef | 1702 | old_mask = env->interrupt_request; |
68a79315 | 1703 | env->interrupt_request |= mask; |
3098dba0 | 1704 | |
8edac960 AL |
1705 | /* |
1706 | * If called from iothread context, wake the target cpu in | |
1707 | * case its halted. | |
1708 | */ | |
60e82579 | 1709 | if (!qemu_cpu_is_self(cpu)) { |
c08d7424 | 1710 | qemu_cpu_kick(cpu); |
8edac960 AL |
1711 | return; |
1712 | } | |
8edac960 | 1713 | |
2e70f6ef | 1714 | if (use_icount) { |
266910c4 | 1715 | env->icount_decr.u16.high = 0xffff; |
2e70f6ef | 1716 | if (!can_do_io(env) |
be214e6c | 1717 | && (mask & ~old_mask) != 0) { |
2e70f6ef PB |
1718 | cpu_abort(env, "Raised interrupt while not in I/O function"); |
1719 | } | |
2e70f6ef | 1720 | } else { |
3098dba0 | 1721 | cpu_unlink_tb(env); |
ea041c0e FB |
1722 | } |
1723 | } | |
1724 | ||
ec6959d0 JK |
1725 | CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt; |
1726 | ||
97ffbd8d JK |
1727 | #else /* CONFIG_USER_ONLY */ |
1728 | ||
9349b4f9 | 1729 | void cpu_interrupt(CPUArchState *env, int mask) |
97ffbd8d JK |
1730 | { |
1731 | env->interrupt_request |= mask; | |
1732 | cpu_unlink_tb(env); | |
1733 | } | |
1734 | #endif /* CONFIG_USER_ONLY */ | |
1735 | ||
9349b4f9 | 1736 | void cpu_reset_interrupt(CPUArchState *env, int mask) |
b54ad049 FB |
1737 | { |
1738 | env->interrupt_request &= ~mask; | |
1739 | } | |
1740 | ||
9349b4f9 | 1741 | void cpu_exit(CPUArchState *env) |
3098dba0 AJ |
1742 | { |
1743 | env->exit_request = 1; | |
1744 | cpu_unlink_tb(env); | |
1745 | } | |
1746 | ||
9349b4f9 | 1747 | void cpu_abort(CPUArchState *env, const char *fmt, ...) |
7501267e FB |
1748 | { |
1749 | va_list ap; | |
493ae1f0 | 1750 | va_list ap2; |
7501267e FB |
1751 | |
1752 | va_start(ap, fmt); | |
493ae1f0 | 1753 | va_copy(ap2, ap); |
7501267e FB |
1754 | fprintf(stderr, "qemu: fatal: "); |
1755 | vfprintf(stderr, fmt, ap); | |
1756 | fprintf(stderr, "\n"); | |
6fd2a026 | 1757 | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
93fcfe39 AL |
1758 | if (qemu_log_enabled()) { |
1759 | qemu_log("qemu: fatal: "); | |
1760 | qemu_log_vprintf(fmt, ap2); | |
1761 | qemu_log("\n"); | |
6fd2a026 | 1762 | log_cpu_state(env, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
31b1a7b4 | 1763 | qemu_log_flush(); |
93fcfe39 | 1764 | qemu_log_close(); |
924edcae | 1765 | } |
493ae1f0 | 1766 | va_end(ap2); |
f9373291 | 1767 | va_end(ap); |
fd052bf6 RV |
1768 | #if defined(CONFIG_USER_ONLY) |
1769 | { | |
1770 | struct sigaction act; | |
1771 | sigfillset(&act.sa_mask); | |
1772 | act.sa_handler = SIG_DFL; | |
1773 | sigaction(SIGABRT, &act, NULL); | |
1774 | } | |
1775 | #endif | |
7501267e FB |
1776 | abort(); |
1777 | } | |
1778 | ||
9349b4f9 | 1779 | CPUArchState *cpu_copy(CPUArchState *env) |
c5be9f08 | 1780 | { |
9349b4f9 AF |
1781 | CPUArchState *new_env = cpu_init(env->cpu_model_str); |
1782 | CPUArchState *next_cpu = new_env->next_cpu; | |
c5be9f08 | 1783 | int cpu_index = new_env->cpu_index; |
5a38f081 AL |
1784 | #if defined(TARGET_HAS_ICE) |
1785 | CPUBreakpoint *bp; | |
1786 | CPUWatchpoint *wp; | |
1787 | #endif | |
1788 | ||
9349b4f9 | 1789 | memcpy(new_env, env, sizeof(CPUArchState)); |
5a38f081 AL |
1790 | |
1791 | /* Preserve chaining and index. */ | |
c5be9f08 TS |
1792 | new_env->next_cpu = next_cpu; |
1793 | new_env->cpu_index = cpu_index; | |
5a38f081 AL |
1794 | |
1795 | /* Clone all break/watchpoints. | |
1796 | Note: Once we support ptrace with hw-debug register access, make sure | |
1797 | BP_CPU break/watchpoints are handled correctly on clone. */ | |
72cf2d4f BS |
1798 | QTAILQ_INIT(&env->breakpoints); |
1799 | QTAILQ_INIT(&env->watchpoints); | |
5a38f081 | 1800 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 1801 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
5a38f081 AL |
1802 | cpu_breakpoint_insert(new_env, bp->pc, bp->flags, NULL); |
1803 | } | |
72cf2d4f | 1804 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
5a38f081 AL |
1805 | cpu_watchpoint_insert(new_env, wp->vaddr, (~wp->len_mask) + 1, |
1806 | wp->flags, NULL); | |
1807 | } | |
1808 | #endif | |
1809 | ||
c5be9f08 TS |
1810 | return new_env; |
1811 | } | |
1812 | ||
0124311e | 1813 | #if !defined(CONFIG_USER_ONLY) |
0cac1b66 | 1814 | void tb_flush_jmp_cache(CPUArchState *env, target_ulong addr) |
5c751e99 EI |
1815 | { |
1816 | unsigned int i; | |
1817 | ||
1818 | /* Discard jump cache entries for any tb which might potentially | |
1819 | overlap the flushed page. */ | |
1820 | i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE); | |
1821 | memset (&env->tb_jmp_cache[i], 0, | |
9742bf26 | 1822 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
5c751e99 EI |
1823 | |
1824 | i = tb_jmp_cache_hash_page(addr); | |
1825 | memset (&env->tb_jmp_cache[i], 0, | |
9742bf26 | 1826 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
5c751e99 EI |
1827 | } |
1828 | ||
d24981d3 JQ |
1829 | static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t end, |
1830 | uintptr_t length) | |
1831 | { | |
1832 | uintptr_t start1; | |
1833 | ||
1834 | /* we modify the TLB cache so that the dirty bit will be set again | |
1835 | when accessing the range */ | |
1836 | start1 = (uintptr_t)qemu_safe_ram_ptr(start); | |
1837 | /* Check that we don't span multiple blocks - this breaks the | |
1838 | address comparisons below. */ | |
1839 | if ((uintptr_t)qemu_safe_ram_ptr(end - 1) - start1 | |
1840 | != (end - 1) - start) { | |
1841 | abort(); | |
1842 | } | |
1843 | cpu_tlb_reset_dirty_all(start1, length); | |
1844 | ||
1845 | } | |
1846 | ||
5579c7f3 | 1847 | /* Note: start and end must be within the same ram block. */ |
c227f099 | 1848 | void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, |
0a962c02 | 1849 | int dirty_flags) |
1ccde1cb | 1850 | { |
d24981d3 | 1851 | uintptr_t length; |
1ccde1cb FB |
1852 | |
1853 | start &= TARGET_PAGE_MASK; | |
1854 | end = TARGET_PAGE_ALIGN(end); | |
1855 | ||
1856 | length = end - start; | |
1857 | if (length == 0) | |
1858 | return; | |
f7c11b53 | 1859 | cpu_physical_memory_mask_dirty_range(start, length, dirty_flags); |
f23db169 | 1860 | |
d24981d3 JQ |
1861 | if (tcg_enabled()) { |
1862 | tlb_reset_dirty_range_all(start, end, length); | |
5579c7f3 | 1863 | } |
1ccde1cb FB |
1864 | } |
1865 | ||
74576198 AL |
1866 | int cpu_physical_memory_set_dirty_tracking(int enable) |
1867 | { | |
f6f3fbca | 1868 | int ret = 0; |
74576198 | 1869 | in_migration = enable; |
f6f3fbca | 1870 | return ret; |
74576198 AL |
1871 | } |
1872 | ||
a8170e5e | 1873 | hwaddr memory_region_section_get_iotlb(CPUArchState *env, |
e5548617 BS |
1874 | MemoryRegionSection *section, |
1875 | target_ulong vaddr, | |
a8170e5e | 1876 | hwaddr paddr, |
e5548617 BS |
1877 | int prot, |
1878 | target_ulong *address) | |
1879 | { | |
a8170e5e | 1880 | hwaddr iotlb; |
e5548617 BS |
1881 | CPUWatchpoint *wp; |
1882 | ||
cc5bea60 | 1883 | if (memory_region_is_ram(section->mr)) { |
e5548617 BS |
1884 | /* Normal RAM. */ |
1885 | iotlb = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) | |
cc5bea60 | 1886 | + memory_region_section_addr(section, paddr); |
e5548617 BS |
1887 | if (!section->readonly) { |
1888 | iotlb |= phys_section_notdirty; | |
1889 | } else { | |
1890 | iotlb |= phys_section_rom; | |
1891 | } | |
1892 | } else { | |
1893 | /* IO handlers are currently passed a physical address. | |
1894 | It would be nice to pass an offset from the base address | |
1895 | of that region. This would avoid having to special case RAM, | |
1896 | and avoid full address decoding in every device. | |
1897 | We can't use the high bits of pd for this because | |
1898 | IO_MEM_ROMD uses these as a ram address. */ | |
1899 | iotlb = section - phys_sections; | |
cc5bea60 | 1900 | iotlb += memory_region_section_addr(section, paddr); |
e5548617 BS |
1901 | } |
1902 | ||
1903 | /* Make accesses to pages with watchpoints go via the | |
1904 | watchpoint trap routines. */ | |
1905 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { | |
1906 | if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) { | |
1907 | /* Avoid trapping reads of pages with a write breakpoint. */ | |
1908 | if ((prot & PAGE_WRITE) || (wp->flags & BP_MEM_READ)) { | |
1909 | iotlb = phys_section_watch + paddr; | |
1910 | *address |= TLB_MMIO; | |
1911 | break; | |
1912 | } | |
1913 | } | |
1914 | } | |
1915 | ||
1916 | return iotlb; | |
1917 | } | |
1918 | ||
0124311e | 1919 | #else |
edf8e2af MW |
1920 | /* |
1921 | * Walks guest process memory "regions" one by one | |
1922 | * and calls callback function 'fn' for each region. | |
1923 | */ | |
5cd2c5b6 RH |
1924 | |
1925 | struct walk_memory_regions_data | |
1926 | { | |
1927 | walk_memory_regions_fn fn; | |
1928 | void *priv; | |
8efe0ca8 | 1929 | uintptr_t start; |
5cd2c5b6 RH |
1930 | int prot; |
1931 | }; | |
1932 | ||
1933 | static int walk_memory_regions_end(struct walk_memory_regions_data *data, | |
b480d9b7 | 1934 | abi_ulong end, int new_prot) |
5cd2c5b6 RH |
1935 | { |
1936 | if (data->start != -1ul) { | |
1937 | int rc = data->fn(data->priv, data->start, end, data->prot); | |
1938 | if (rc != 0) { | |
1939 | return rc; | |
1940 | } | |
1941 | } | |
1942 | ||
1943 | data->start = (new_prot ? end : -1ul); | |
1944 | data->prot = new_prot; | |
1945 | ||
1946 | return 0; | |
1947 | } | |
1948 | ||
1949 | static int walk_memory_regions_1(struct walk_memory_regions_data *data, | |
b480d9b7 | 1950 | abi_ulong base, int level, void **lp) |
5cd2c5b6 | 1951 | { |
b480d9b7 | 1952 | abi_ulong pa; |
5cd2c5b6 RH |
1953 | int i, rc; |
1954 | ||
1955 | if (*lp == NULL) { | |
1956 | return walk_memory_regions_end(data, base, 0); | |
1957 | } | |
1958 | ||
1959 | if (level == 0) { | |
1960 | PageDesc *pd = *lp; | |
7296abac | 1961 | for (i = 0; i < L2_SIZE; ++i) { |
5cd2c5b6 RH |
1962 | int prot = pd[i].flags; |
1963 | ||
1964 | pa = base | (i << TARGET_PAGE_BITS); | |
1965 | if (prot != data->prot) { | |
1966 | rc = walk_memory_regions_end(data, pa, prot); | |
1967 | if (rc != 0) { | |
1968 | return rc; | |
9fa3e853 | 1969 | } |
9fa3e853 | 1970 | } |
5cd2c5b6 RH |
1971 | } |
1972 | } else { | |
1973 | void **pp = *lp; | |
7296abac | 1974 | for (i = 0; i < L2_SIZE; ++i) { |
b480d9b7 PB |
1975 | pa = base | ((abi_ulong)i << |
1976 | (TARGET_PAGE_BITS + L2_BITS * level)); | |
5cd2c5b6 RH |
1977 | rc = walk_memory_regions_1(data, pa, level - 1, pp + i); |
1978 | if (rc != 0) { | |
1979 | return rc; | |
1980 | } | |
1981 | } | |
1982 | } | |
1983 | ||
1984 | return 0; | |
1985 | } | |
1986 | ||
1987 | int walk_memory_regions(void *priv, walk_memory_regions_fn fn) | |
1988 | { | |
1989 | struct walk_memory_regions_data data; | |
8efe0ca8 | 1990 | uintptr_t i; |
5cd2c5b6 RH |
1991 | |
1992 | data.fn = fn; | |
1993 | data.priv = priv; | |
1994 | data.start = -1ul; | |
1995 | data.prot = 0; | |
1996 | ||
1997 | for (i = 0; i < V_L1_SIZE; i++) { | |
b480d9b7 | 1998 | int rc = walk_memory_regions_1(&data, (abi_ulong)i << V_L1_SHIFT, |
5cd2c5b6 RH |
1999 | V_L1_SHIFT / L2_BITS - 1, l1_map + i); |
2000 | if (rc != 0) { | |
2001 | return rc; | |
9fa3e853 | 2002 | } |
33417e70 | 2003 | } |
5cd2c5b6 RH |
2004 | |
2005 | return walk_memory_regions_end(&data, 0, 0); | |
edf8e2af MW |
2006 | } |
2007 | ||
b480d9b7 PB |
2008 | static int dump_region(void *priv, abi_ulong start, |
2009 | abi_ulong end, unsigned long prot) | |
edf8e2af MW |
2010 | { |
2011 | FILE *f = (FILE *)priv; | |
2012 | ||
b480d9b7 PB |
2013 | (void) fprintf(f, TARGET_ABI_FMT_lx"-"TARGET_ABI_FMT_lx |
2014 | " "TARGET_ABI_FMT_lx" %c%c%c\n", | |
edf8e2af MW |
2015 | start, end, end - start, |
2016 | ((prot & PAGE_READ) ? 'r' : '-'), | |
2017 | ((prot & PAGE_WRITE) ? 'w' : '-'), | |
2018 | ((prot & PAGE_EXEC) ? 'x' : '-')); | |
2019 | ||
2020 | return (0); | |
2021 | } | |
2022 | ||
2023 | /* dump memory mappings */ | |
2024 | void page_dump(FILE *f) | |
2025 | { | |
2026 | (void) fprintf(f, "%-8s %-8s %-8s %s\n", | |
2027 | "start", "end", "size", "prot"); | |
2028 | walk_memory_regions(f, dump_region); | |
33417e70 FB |
2029 | } |
2030 | ||
53a5960a | 2031 | int page_get_flags(target_ulong address) |
33417e70 | 2032 | { |
9fa3e853 FB |
2033 | PageDesc *p; |
2034 | ||
2035 | p = page_find(address >> TARGET_PAGE_BITS); | |
33417e70 | 2036 | if (!p) |
9fa3e853 FB |
2037 | return 0; |
2038 | return p->flags; | |
2039 | } | |
2040 | ||
376a7909 RH |
2041 | /* Modify the flags of a page and invalidate the code if necessary. |
2042 | The flag PAGE_WRITE_ORG is positioned automatically depending | |
2043 | on PAGE_WRITE. The mmap_lock should already be held. */ | |
53a5960a | 2044 | void page_set_flags(target_ulong start, target_ulong end, int flags) |
9fa3e853 | 2045 | { |
376a7909 RH |
2046 | target_ulong addr, len; |
2047 | ||
2048 | /* This function should never be called with addresses outside the | |
2049 | guest address space. If this assert fires, it probably indicates | |
2050 | a missing call to h2g_valid. */ | |
b480d9b7 PB |
2051 | #if TARGET_ABI_BITS > L1_MAP_ADDR_SPACE_BITS |
2052 | assert(end < ((abi_ulong)1 << L1_MAP_ADDR_SPACE_BITS)); | |
376a7909 RH |
2053 | #endif |
2054 | assert(start < end); | |
9fa3e853 FB |
2055 | |
2056 | start = start & TARGET_PAGE_MASK; | |
2057 | end = TARGET_PAGE_ALIGN(end); | |
376a7909 RH |
2058 | |
2059 | if (flags & PAGE_WRITE) { | |
9fa3e853 | 2060 | flags |= PAGE_WRITE_ORG; |
376a7909 RH |
2061 | } |
2062 | ||
2063 | for (addr = start, len = end - start; | |
2064 | len != 0; | |
2065 | len -= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) { | |
2066 | PageDesc *p = page_find_alloc(addr >> TARGET_PAGE_BITS, 1); | |
2067 | ||
2068 | /* If the write protection bit is set, then we invalidate | |
2069 | the code inside. */ | |
5fafdf24 | 2070 | if (!(p->flags & PAGE_WRITE) && |
9fa3e853 FB |
2071 | (flags & PAGE_WRITE) && |
2072 | p->first_tb) { | |
d720b93d | 2073 | tb_invalidate_phys_page(addr, 0, NULL); |
9fa3e853 FB |
2074 | } |
2075 | p->flags = flags; | |
2076 | } | |
33417e70 FB |
2077 | } |
2078 | ||
3d97b40b TS |
2079 | int page_check_range(target_ulong start, target_ulong len, int flags) |
2080 | { | |
2081 | PageDesc *p; | |
2082 | target_ulong end; | |
2083 | target_ulong addr; | |
2084 | ||
376a7909 RH |
2085 | /* This function should never be called with addresses outside the |
2086 | guest address space. If this assert fires, it probably indicates | |
2087 | a missing call to h2g_valid. */ | |
338e9e6c BS |
2088 | #if TARGET_ABI_BITS > L1_MAP_ADDR_SPACE_BITS |
2089 | assert(start < ((abi_ulong)1 << L1_MAP_ADDR_SPACE_BITS)); | |
376a7909 RH |
2090 | #endif |
2091 | ||
3e0650a9 RH |
2092 | if (len == 0) { |
2093 | return 0; | |
2094 | } | |
376a7909 RH |
2095 | if (start + len - 1 < start) { |
2096 | /* We've wrapped around. */ | |
55f280c9 | 2097 | return -1; |
376a7909 | 2098 | } |
55f280c9 | 2099 | |
3d97b40b TS |
2100 | end = TARGET_PAGE_ALIGN(start+len); /* must do before we loose bits in the next step */ |
2101 | start = start & TARGET_PAGE_MASK; | |
2102 | ||
376a7909 RH |
2103 | for (addr = start, len = end - start; |
2104 | len != 0; | |
2105 | len -= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) { | |
3d97b40b TS |
2106 | p = page_find(addr >> TARGET_PAGE_BITS); |
2107 | if( !p ) | |
2108 | return -1; | |
2109 | if( !(p->flags & PAGE_VALID) ) | |
2110 | return -1; | |
2111 | ||
dae3270c | 2112 | if ((flags & PAGE_READ) && !(p->flags & PAGE_READ)) |
3d97b40b | 2113 | return -1; |
dae3270c FB |
2114 | if (flags & PAGE_WRITE) { |
2115 | if (!(p->flags & PAGE_WRITE_ORG)) | |
2116 | return -1; | |
2117 | /* unprotect the page if it was put read-only because it | |
2118 | contains translated code */ | |
2119 | if (!(p->flags & PAGE_WRITE)) { | |
2120 | if (!page_unprotect(addr, 0, NULL)) | |
2121 | return -1; | |
2122 | } | |
2123 | return 0; | |
2124 | } | |
3d97b40b TS |
2125 | } |
2126 | return 0; | |
2127 | } | |
2128 | ||
9fa3e853 | 2129 | /* called from signal handler: invalidate the code and unprotect the |
ccbb4d44 | 2130 | page. Return TRUE if the fault was successfully handled. */ |
6375e09e | 2131 | int page_unprotect(target_ulong address, uintptr_t pc, void *puc) |
9fa3e853 | 2132 | { |
45d679d6 AJ |
2133 | unsigned int prot; |
2134 | PageDesc *p; | |
53a5960a | 2135 | target_ulong host_start, host_end, addr; |
9fa3e853 | 2136 | |
c8a706fe PB |
2137 | /* Technically this isn't safe inside a signal handler. However we |
2138 | know this only ever happens in a synchronous SEGV handler, so in | |
2139 | practice it seems to be ok. */ | |
2140 | mmap_lock(); | |
2141 | ||
45d679d6 AJ |
2142 | p = page_find(address >> TARGET_PAGE_BITS); |
2143 | if (!p) { | |
c8a706fe | 2144 | mmap_unlock(); |
9fa3e853 | 2145 | return 0; |
c8a706fe | 2146 | } |
45d679d6 | 2147 | |
9fa3e853 FB |
2148 | /* if the page was really writable, then we change its |
2149 | protection back to writable */ | |
45d679d6 AJ |
2150 | if ((p->flags & PAGE_WRITE_ORG) && !(p->flags & PAGE_WRITE)) { |
2151 | host_start = address & qemu_host_page_mask; | |
2152 | host_end = host_start + qemu_host_page_size; | |
2153 | ||
2154 | prot = 0; | |
2155 | for (addr = host_start ; addr < host_end ; addr += TARGET_PAGE_SIZE) { | |
2156 | p = page_find(addr >> TARGET_PAGE_BITS); | |
2157 | p->flags |= PAGE_WRITE; | |
2158 | prot |= p->flags; | |
2159 | ||
9fa3e853 FB |
2160 | /* and since the content will be modified, we must invalidate |
2161 | the corresponding translated code. */ | |
45d679d6 | 2162 | tb_invalidate_phys_page(addr, pc, puc); |
9fa3e853 | 2163 | #ifdef DEBUG_TB_CHECK |
45d679d6 | 2164 | tb_invalidate_check(addr); |
9fa3e853 | 2165 | #endif |
9fa3e853 | 2166 | } |
45d679d6 AJ |
2167 | mprotect((void *)g2h(host_start), qemu_host_page_size, |
2168 | prot & PAGE_BITS); | |
2169 | ||
2170 | mmap_unlock(); | |
2171 | return 1; | |
9fa3e853 | 2172 | } |
c8a706fe | 2173 | mmap_unlock(); |
9fa3e853 FB |
2174 | return 0; |
2175 | } | |
9fa3e853 FB |
2176 | #endif /* defined(CONFIG_USER_ONLY) */ |
2177 | ||
e2eef170 | 2178 | #if !defined(CONFIG_USER_ONLY) |
8da3ff18 | 2179 | |
c04b2b78 PB |
2180 | #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) |
2181 | typedef struct subpage_t { | |
70c68e44 | 2182 | MemoryRegion iomem; |
a8170e5e | 2183 | hwaddr base; |
5312bd8b | 2184 | uint16_t sub_section[TARGET_PAGE_SIZE]; |
c04b2b78 PB |
2185 | } subpage_t; |
2186 | ||
c227f099 | 2187 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 2188 | uint16_t section); |
a8170e5e | 2189 | static subpage_t *subpage_init(hwaddr base); |
5312bd8b | 2190 | static void destroy_page_desc(uint16_t section_index) |
54688b1e | 2191 | { |
5312bd8b AK |
2192 | MemoryRegionSection *section = &phys_sections[section_index]; |
2193 | MemoryRegion *mr = section->mr; | |
54688b1e AK |
2194 | |
2195 | if (mr->subpage) { | |
2196 | subpage_t *subpage = container_of(mr, subpage_t, iomem); | |
2197 | memory_region_destroy(&subpage->iomem); | |
2198 | g_free(subpage); | |
2199 | } | |
2200 | } | |
2201 | ||
4346ae3e | 2202 | static void destroy_l2_mapping(PhysPageEntry *lp, unsigned level) |
54688b1e AK |
2203 | { |
2204 | unsigned i; | |
d6f2ea22 | 2205 | PhysPageEntry *p; |
54688b1e | 2206 | |
c19e8800 | 2207 | if (lp->ptr == PHYS_MAP_NODE_NIL) { |
54688b1e AK |
2208 | return; |
2209 | } | |
2210 | ||
c19e8800 | 2211 | p = phys_map_nodes[lp->ptr]; |
4346ae3e | 2212 | for (i = 0; i < L2_SIZE; ++i) { |
07f07b31 | 2213 | if (!p[i].is_leaf) { |
54688b1e | 2214 | destroy_l2_mapping(&p[i], level - 1); |
4346ae3e | 2215 | } else { |
c19e8800 | 2216 | destroy_page_desc(p[i].ptr); |
54688b1e | 2217 | } |
54688b1e | 2218 | } |
07f07b31 | 2219 | lp->is_leaf = 0; |
c19e8800 | 2220 | lp->ptr = PHYS_MAP_NODE_NIL; |
54688b1e AK |
2221 | } |
2222 | ||
ac1970fb | 2223 | static void destroy_all_mappings(AddressSpaceDispatch *d) |
54688b1e | 2224 | { |
ac1970fb | 2225 | destroy_l2_mapping(&d->phys_map, P_L2_LEVELS - 1); |
d6f2ea22 | 2226 | phys_map_nodes_reset(); |
54688b1e AK |
2227 | } |
2228 | ||
5312bd8b AK |
2229 | static uint16_t phys_section_add(MemoryRegionSection *section) |
2230 | { | |
2231 | if (phys_sections_nb == phys_sections_nb_alloc) { | |
2232 | phys_sections_nb_alloc = MAX(phys_sections_nb_alloc * 2, 16); | |
2233 | phys_sections = g_renew(MemoryRegionSection, phys_sections, | |
2234 | phys_sections_nb_alloc); | |
2235 | } | |
2236 | phys_sections[phys_sections_nb] = *section; | |
2237 | return phys_sections_nb++; | |
2238 | } | |
2239 | ||
2240 | static void phys_sections_clear(void) | |
2241 | { | |
2242 | phys_sections_nb = 0; | |
2243 | } | |
2244 | ||
ac1970fb | 2245 | static void register_subpage(AddressSpaceDispatch *d, MemoryRegionSection *section) |
0f0cb164 AK |
2246 | { |
2247 | subpage_t *subpage; | |
a8170e5e | 2248 | hwaddr base = section->offset_within_address_space |
0f0cb164 | 2249 | & TARGET_PAGE_MASK; |
ac1970fb | 2250 | MemoryRegionSection *existing = phys_page_find(d, base >> TARGET_PAGE_BITS); |
0f0cb164 AK |
2251 | MemoryRegionSection subsection = { |
2252 | .offset_within_address_space = base, | |
2253 | .size = TARGET_PAGE_SIZE, | |
2254 | }; | |
a8170e5e | 2255 | hwaddr start, end; |
0f0cb164 | 2256 | |
f3705d53 | 2257 | assert(existing->mr->subpage || existing->mr == &io_mem_unassigned); |
0f0cb164 | 2258 | |
f3705d53 | 2259 | if (!(existing->mr->subpage)) { |
0f0cb164 AK |
2260 | subpage = subpage_init(base); |
2261 | subsection.mr = &subpage->iomem; | |
ac1970fb | 2262 | phys_page_set(d, base >> TARGET_PAGE_BITS, 1, |
2999097b | 2263 | phys_section_add(&subsection)); |
0f0cb164 | 2264 | } else { |
f3705d53 | 2265 | subpage = container_of(existing->mr, subpage_t, iomem); |
0f0cb164 AK |
2266 | } |
2267 | start = section->offset_within_address_space & ~TARGET_PAGE_MASK; | |
adb2a9b5 | 2268 | end = start + section->size - 1; |
0f0cb164 AK |
2269 | subpage_register(subpage, start, end, phys_section_add(section)); |
2270 | } | |
2271 | ||
2272 | ||
ac1970fb | 2273 | static void register_multipage(AddressSpaceDispatch *d, MemoryRegionSection *section) |
33417e70 | 2274 | { |
a8170e5e | 2275 | hwaddr start_addr = section->offset_within_address_space; |
dd81124b | 2276 | ram_addr_t size = section->size; |
a8170e5e | 2277 | hwaddr addr; |
5312bd8b | 2278 | uint16_t section_index = phys_section_add(section); |
dd81124b | 2279 | |
3b8e6a2d | 2280 | assert(size); |
f6f3fbca | 2281 | |
3b8e6a2d | 2282 | addr = start_addr; |
ac1970fb | 2283 | phys_page_set(d, addr >> TARGET_PAGE_BITS, size >> TARGET_PAGE_BITS, |
2999097b | 2284 | section_index); |
33417e70 FB |
2285 | } |
2286 | ||
ac1970fb | 2287 | static void mem_add(MemoryListener *listener, MemoryRegionSection *section) |
0f0cb164 | 2288 | { |
ac1970fb | 2289 | AddressSpaceDispatch *d = container_of(listener, AddressSpaceDispatch, listener); |
0f0cb164 AK |
2290 | MemoryRegionSection now = *section, remain = *section; |
2291 | ||
2292 | if ((now.offset_within_address_space & ~TARGET_PAGE_MASK) | |
2293 | || (now.size < TARGET_PAGE_SIZE)) { | |
2294 | now.size = MIN(TARGET_PAGE_ALIGN(now.offset_within_address_space) | |
2295 | - now.offset_within_address_space, | |
2296 | now.size); | |
ac1970fb | 2297 | register_subpage(d, &now); |
0f0cb164 AK |
2298 | remain.size -= now.size; |
2299 | remain.offset_within_address_space += now.size; | |
2300 | remain.offset_within_region += now.size; | |
2301 | } | |
69b67646 TH |
2302 | while (remain.size >= TARGET_PAGE_SIZE) { |
2303 | now = remain; | |
2304 | if (remain.offset_within_region & ~TARGET_PAGE_MASK) { | |
2305 | now.size = TARGET_PAGE_SIZE; | |
ac1970fb | 2306 | register_subpage(d, &now); |
69b67646 TH |
2307 | } else { |
2308 | now.size &= TARGET_PAGE_MASK; | |
ac1970fb | 2309 | register_multipage(d, &now); |
69b67646 | 2310 | } |
0f0cb164 AK |
2311 | remain.size -= now.size; |
2312 | remain.offset_within_address_space += now.size; | |
2313 | remain.offset_within_region += now.size; | |
2314 | } | |
2315 | now = remain; | |
2316 | if (now.size) { | |
ac1970fb | 2317 | register_subpage(d, &now); |
0f0cb164 AK |
2318 | } |
2319 | } | |
2320 | ||
62a2744c SY |
2321 | void qemu_flush_coalesced_mmio_buffer(void) |
2322 | { | |
2323 | if (kvm_enabled()) | |
2324 | kvm_flush_coalesced_mmio_buffer(); | |
2325 | } | |
2326 | ||
c902760f MT |
2327 | #if defined(__linux__) && !defined(TARGET_S390X) |
2328 | ||
2329 | #include <sys/vfs.h> | |
2330 | ||
2331 | #define HUGETLBFS_MAGIC 0x958458f6 | |
2332 | ||
2333 | static long gethugepagesize(const char *path) | |
2334 | { | |
2335 | struct statfs fs; | |
2336 | int ret; | |
2337 | ||
2338 | do { | |
9742bf26 | 2339 | ret = statfs(path, &fs); |
c902760f MT |
2340 | } while (ret != 0 && errno == EINTR); |
2341 | ||
2342 | if (ret != 0) { | |
9742bf26 YT |
2343 | perror(path); |
2344 | return 0; | |
c902760f MT |
2345 | } |
2346 | ||
2347 | if (fs.f_type != HUGETLBFS_MAGIC) | |
9742bf26 | 2348 | fprintf(stderr, "Warning: path not on HugeTLBFS: %s\n", path); |
c902760f MT |
2349 | |
2350 | return fs.f_bsize; | |
2351 | } | |
2352 | ||
04b16653 AW |
2353 | static void *file_ram_alloc(RAMBlock *block, |
2354 | ram_addr_t memory, | |
2355 | const char *path) | |
c902760f MT |
2356 | { |
2357 | char *filename; | |
2358 | void *area; | |
2359 | int fd; | |
2360 | #ifdef MAP_POPULATE | |
2361 | int flags; | |
2362 | #endif | |
2363 | unsigned long hpagesize; | |
2364 | ||
2365 | hpagesize = gethugepagesize(path); | |
2366 | if (!hpagesize) { | |
9742bf26 | 2367 | return NULL; |
c902760f MT |
2368 | } |
2369 | ||
2370 | if (memory < hpagesize) { | |
2371 | return NULL; | |
2372 | } | |
2373 | ||
2374 | if (kvm_enabled() && !kvm_has_sync_mmu()) { | |
2375 | fprintf(stderr, "host lacks kvm mmu notifiers, -mem-path unsupported\n"); | |
2376 | return NULL; | |
2377 | } | |
2378 | ||
2379 | if (asprintf(&filename, "%s/qemu_back_mem.XXXXXX", path) == -1) { | |
9742bf26 | 2380 | return NULL; |
c902760f MT |
2381 | } |
2382 | ||
2383 | fd = mkstemp(filename); | |
2384 | if (fd < 0) { | |
9742bf26 YT |
2385 | perror("unable to create backing store for hugepages"); |
2386 | free(filename); | |
2387 | return NULL; | |
c902760f MT |
2388 | } |
2389 | unlink(filename); | |
2390 | free(filename); | |
2391 | ||
2392 | memory = (memory+hpagesize-1) & ~(hpagesize-1); | |
2393 | ||
2394 | /* | |
2395 | * ftruncate is not supported by hugetlbfs in older | |
2396 | * hosts, so don't bother bailing out on errors. | |
2397 | * If anything goes wrong with it under other filesystems, | |
2398 | * mmap will fail. | |
2399 | */ | |
2400 | if (ftruncate(fd, memory)) | |
9742bf26 | 2401 | perror("ftruncate"); |
c902760f MT |
2402 | |
2403 | #ifdef MAP_POPULATE | |
2404 | /* NB: MAP_POPULATE won't exhaustively alloc all phys pages in the case | |
2405 | * MAP_PRIVATE is requested. For mem_prealloc we mmap as MAP_SHARED | |
2406 | * to sidestep this quirk. | |
2407 | */ | |
2408 | flags = mem_prealloc ? MAP_POPULATE | MAP_SHARED : MAP_PRIVATE; | |
2409 | area = mmap(0, memory, PROT_READ | PROT_WRITE, flags, fd, 0); | |
2410 | #else | |
2411 | area = mmap(0, memory, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); | |
2412 | #endif | |
2413 | if (area == MAP_FAILED) { | |
9742bf26 YT |
2414 | perror("file_ram_alloc: can't mmap RAM pages"); |
2415 | close(fd); | |
2416 | return (NULL); | |
c902760f | 2417 | } |
04b16653 | 2418 | block->fd = fd; |
c902760f MT |
2419 | return area; |
2420 | } | |
2421 | #endif | |
2422 | ||
d17b5288 | 2423 | static ram_addr_t find_ram_offset(ram_addr_t size) |
04b16653 AW |
2424 | { |
2425 | RAMBlock *block, *next_block; | |
3e837b2c | 2426 | ram_addr_t offset = RAM_ADDR_MAX, mingap = RAM_ADDR_MAX; |
04b16653 AW |
2427 | |
2428 | if (QLIST_EMPTY(&ram_list.blocks)) | |
2429 | return 0; | |
2430 | ||
2431 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
f15fbc4b | 2432 | ram_addr_t end, next = RAM_ADDR_MAX; |
04b16653 AW |
2433 | |
2434 | end = block->offset + block->length; | |
2435 | ||
2436 | QLIST_FOREACH(next_block, &ram_list.blocks, next) { | |
2437 | if (next_block->offset >= end) { | |
2438 | next = MIN(next, next_block->offset); | |
2439 | } | |
2440 | } | |
2441 | if (next - end >= size && next - end < mingap) { | |
3e837b2c | 2442 | offset = end; |
04b16653 AW |
2443 | mingap = next - end; |
2444 | } | |
2445 | } | |
3e837b2c AW |
2446 | |
2447 | if (offset == RAM_ADDR_MAX) { | |
2448 | fprintf(stderr, "Failed to find gap of requested size: %" PRIu64 "\n", | |
2449 | (uint64_t)size); | |
2450 | abort(); | |
2451 | } | |
2452 | ||
04b16653 AW |
2453 | return offset; |
2454 | } | |
2455 | ||
652d7ec2 | 2456 | ram_addr_t last_ram_offset(void) |
d17b5288 AW |
2457 | { |
2458 | RAMBlock *block; | |
2459 | ram_addr_t last = 0; | |
2460 | ||
2461 | QLIST_FOREACH(block, &ram_list.blocks, next) | |
2462 | last = MAX(last, block->offset + block->length); | |
2463 | ||
2464 | return last; | |
2465 | } | |
2466 | ||
ddb97f1d JB |
2467 | static void qemu_ram_setup_dump(void *addr, ram_addr_t size) |
2468 | { | |
2469 | int ret; | |
2470 | QemuOpts *machine_opts; | |
2471 | ||
2472 | /* Use MADV_DONTDUMP, if user doesn't want the guest memory in the core */ | |
2473 | machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0); | |
2474 | if (machine_opts && | |
2475 | !qemu_opt_get_bool(machine_opts, "dump-guest-core", true)) { | |
2476 | ret = qemu_madvise(addr, size, QEMU_MADV_DONTDUMP); | |
2477 | if (ret) { | |
2478 | perror("qemu_madvise"); | |
2479 | fprintf(stderr, "madvise doesn't support MADV_DONTDUMP, " | |
2480 | "but dump_guest_core=off specified\n"); | |
2481 | } | |
2482 | } | |
2483 | } | |
2484 | ||
c5705a77 | 2485 | void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev) |
84b89d78 CM |
2486 | { |
2487 | RAMBlock *new_block, *block; | |
2488 | ||
c5705a77 AK |
2489 | new_block = NULL; |
2490 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2491 | if (block->offset == addr) { | |
2492 | new_block = block; | |
2493 | break; | |
2494 | } | |
2495 | } | |
2496 | assert(new_block); | |
2497 | assert(!new_block->idstr[0]); | |
84b89d78 | 2498 | |
09e5ab63 AL |
2499 | if (dev) { |
2500 | char *id = qdev_get_dev_path(dev); | |
84b89d78 CM |
2501 | if (id) { |
2502 | snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id); | |
7267c094 | 2503 | g_free(id); |
84b89d78 CM |
2504 | } |
2505 | } | |
2506 | pstrcat(new_block->idstr, sizeof(new_block->idstr), name); | |
2507 | ||
2508 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
c5705a77 | 2509 | if (block != new_block && !strcmp(block->idstr, new_block->idstr)) { |
84b89d78 CM |
2510 | fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n", |
2511 | new_block->idstr); | |
2512 | abort(); | |
2513 | } | |
2514 | } | |
c5705a77 AK |
2515 | } |
2516 | ||
8490fc78 LC |
2517 | static int memory_try_enable_merging(void *addr, size_t len) |
2518 | { | |
2519 | QemuOpts *opts; | |
2520 | ||
2521 | opts = qemu_opts_find(qemu_find_opts("machine"), 0); | |
2522 | if (opts && !qemu_opt_get_bool(opts, "mem-merge", true)) { | |
2523 | /* disabled by the user */ | |
2524 | return 0; | |
2525 | } | |
2526 | ||
2527 | return qemu_madvise(addr, len, QEMU_MADV_MERGEABLE); | |
2528 | } | |
2529 | ||
c5705a77 AK |
2530 | ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, |
2531 | MemoryRegion *mr) | |
2532 | { | |
2533 | RAMBlock *new_block; | |
2534 | ||
2535 | size = TARGET_PAGE_ALIGN(size); | |
2536 | new_block = g_malloc0(sizeof(*new_block)); | |
84b89d78 | 2537 | |
7c637366 | 2538 | new_block->mr = mr; |
432d268c | 2539 | new_block->offset = find_ram_offset(size); |
6977dfe6 YT |
2540 | if (host) { |
2541 | new_block->host = host; | |
cd19cfa2 | 2542 | new_block->flags |= RAM_PREALLOC_MASK; |
6977dfe6 YT |
2543 | } else { |
2544 | if (mem_path) { | |
c902760f | 2545 | #if defined (__linux__) && !defined(TARGET_S390X) |
6977dfe6 YT |
2546 | new_block->host = file_ram_alloc(new_block, size, mem_path); |
2547 | if (!new_block->host) { | |
2548 | new_block->host = qemu_vmalloc(size); | |
8490fc78 | 2549 | memory_try_enable_merging(new_block->host, size); |
6977dfe6 | 2550 | } |
c902760f | 2551 | #else |
6977dfe6 YT |
2552 | fprintf(stderr, "-mem-path option unsupported\n"); |
2553 | exit(1); | |
c902760f | 2554 | #endif |
6977dfe6 | 2555 | } else { |
868bb33f | 2556 | if (xen_enabled()) { |
fce537d4 | 2557 | xen_ram_alloc(new_block->offset, size, mr); |
fdec9918 CB |
2558 | } else if (kvm_enabled()) { |
2559 | /* some s390/kvm configurations have special constraints */ | |
2560 | new_block->host = kvm_vmalloc(size); | |
432d268c JN |
2561 | } else { |
2562 | new_block->host = qemu_vmalloc(size); | |
2563 | } | |
8490fc78 | 2564 | memory_try_enable_merging(new_block->host, size); |
6977dfe6 | 2565 | } |
c902760f | 2566 | } |
94a6b54f PB |
2567 | new_block->length = size; |
2568 | ||
f471a17e | 2569 | QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next); |
94a6b54f | 2570 | |
7267c094 | 2571 | ram_list.phys_dirty = g_realloc(ram_list.phys_dirty, |
04b16653 | 2572 | last_ram_offset() >> TARGET_PAGE_BITS); |
5fda043f IM |
2573 | memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS), |
2574 | 0, size >> TARGET_PAGE_BITS); | |
1720aeee | 2575 | cpu_physical_memory_set_dirty_range(new_block->offset, size, 0xff); |
94a6b54f | 2576 | |
ddb97f1d | 2577 | qemu_ram_setup_dump(new_block->host, size); |
ad0b5321 | 2578 | qemu_madvise(new_block->host, size, QEMU_MADV_HUGEPAGE); |
ddb97f1d | 2579 | |
6f0437e8 JK |
2580 | if (kvm_enabled()) |
2581 | kvm_setup_guest_memory(new_block->host, size); | |
2582 | ||
94a6b54f PB |
2583 | return new_block->offset; |
2584 | } | |
e9a1ab19 | 2585 | |
c5705a77 | 2586 | ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr) |
6977dfe6 | 2587 | { |
c5705a77 | 2588 | return qemu_ram_alloc_from_ptr(size, NULL, mr); |
6977dfe6 YT |
2589 | } |
2590 | ||
1f2e98b6 AW |
2591 | void qemu_ram_free_from_ptr(ram_addr_t addr) |
2592 | { | |
2593 | RAMBlock *block; | |
2594 | ||
2595 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2596 | if (addr == block->offset) { | |
2597 | QLIST_REMOVE(block, next); | |
7267c094 | 2598 | g_free(block); |
1f2e98b6 AW |
2599 | return; |
2600 | } | |
2601 | } | |
2602 | } | |
2603 | ||
c227f099 | 2604 | void qemu_ram_free(ram_addr_t addr) |
e9a1ab19 | 2605 | { |
04b16653 AW |
2606 | RAMBlock *block; |
2607 | ||
2608 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2609 | if (addr == block->offset) { | |
2610 | QLIST_REMOVE(block, next); | |
cd19cfa2 HY |
2611 | if (block->flags & RAM_PREALLOC_MASK) { |
2612 | ; | |
2613 | } else if (mem_path) { | |
04b16653 AW |
2614 | #if defined (__linux__) && !defined(TARGET_S390X) |
2615 | if (block->fd) { | |
2616 | munmap(block->host, block->length); | |
2617 | close(block->fd); | |
2618 | } else { | |
2619 | qemu_vfree(block->host); | |
2620 | } | |
fd28aa13 JK |
2621 | #else |
2622 | abort(); | |
04b16653 AW |
2623 | #endif |
2624 | } else { | |
2625 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
2626 | munmap(block->host, block->length); | |
2627 | #else | |
868bb33f | 2628 | if (xen_enabled()) { |
e41d7c69 | 2629 | xen_invalidate_map_cache_entry(block->host); |
432d268c JN |
2630 | } else { |
2631 | qemu_vfree(block->host); | |
2632 | } | |
04b16653 AW |
2633 | #endif |
2634 | } | |
7267c094 | 2635 | g_free(block); |
04b16653 AW |
2636 | return; |
2637 | } | |
2638 | } | |
2639 | ||
e9a1ab19 FB |
2640 | } |
2641 | ||
cd19cfa2 HY |
2642 | #ifndef _WIN32 |
2643 | void qemu_ram_remap(ram_addr_t addr, ram_addr_t length) | |
2644 | { | |
2645 | RAMBlock *block; | |
2646 | ram_addr_t offset; | |
2647 | int flags; | |
2648 | void *area, *vaddr; | |
2649 | ||
2650 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2651 | offset = addr - block->offset; | |
2652 | if (offset < block->length) { | |
2653 | vaddr = block->host + offset; | |
2654 | if (block->flags & RAM_PREALLOC_MASK) { | |
2655 | ; | |
2656 | } else { | |
2657 | flags = MAP_FIXED; | |
2658 | munmap(vaddr, length); | |
2659 | if (mem_path) { | |
2660 | #if defined(__linux__) && !defined(TARGET_S390X) | |
2661 | if (block->fd) { | |
2662 | #ifdef MAP_POPULATE | |
2663 | flags |= mem_prealloc ? MAP_POPULATE | MAP_SHARED : | |
2664 | MAP_PRIVATE; | |
2665 | #else | |
2666 | flags |= MAP_PRIVATE; | |
2667 | #endif | |
2668 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
2669 | flags, block->fd, offset); | |
2670 | } else { | |
2671 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
2672 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
2673 | flags, -1, 0); | |
2674 | } | |
fd28aa13 JK |
2675 | #else |
2676 | abort(); | |
cd19cfa2 HY |
2677 | #endif |
2678 | } else { | |
2679 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
2680 | flags |= MAP_SHARED | MAP_ANONYMOUS; | |
2681 | area = mmap(vaddr, length, PROT_EXEC|PROT_READ|PROT_WRITE, | |
2682 | flags, -1, 0); | |
2683 | #else | |
2684 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
2685 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
2686 | flags, -1, 0); | |
2687 | #endif | |
2688 | } | |
2689 | if (area != vaddr) { | |
f15fbc4b AP |
2690 | fprintf(stderr, "Could not remap addr: " |
2691 | RAM_ADDR_FMT "@" RAM_ADDR_FMT "\n", | |
cd19cfa2 HY |
2692 | length, addr); |
2693 | exit(1); | |
2694 | } | |
8490fc78 | 2695 | memory_try_enable_merging(vaddr, length); |
ddb97f1d | 2696 | qemu_ram_setup_dump(vaddr, length); |
cd19cfa2 HY |
2697 | } |
2698 | return; | |
2699 | } | |
2700 | } | |
2701 | } | |
2702 | #endif /* !_WIN32 */ | |
2703 | ||
dc828ca1 | 2704 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
5579c7f3 PB |
2705 | With the exception of the softmmu code in this file, this should |
2706 | only be used for local memory (e.g. video ram) that the device owns, | |
2707 | and knows it isn't going to access beyond the end of the block. | |
2708 | ||
2709 | It should not be used for general purpose DMA. | |
2710 | Use cpu_physical_memory_map/cpu_physical_memory_rw instead. | |
2711 | */ | |
c227f099 | 2712 | void *qemu_get_ram_ptr(ram_addr_t addr) |
dc828ca1 | 2713 | { |
94a6b54f PB |
2714 | RAMBlock *block; |
2715 | ||
f471a17e AW |
2716 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
2717 | if (addr - block->offset < block->length) { | |
7d82af38 VP |
2718 | /* Move this entry to to start of the list. */ |
2719 | if (block != QLIST_FIRST(&ram_list.blocks)) { | |
2720 | QLIST_REMOVE(block, next); | |
2721 | QLIST_INSERT_HEAD(&ram_list.blocks, block, next); | |
2722 | } | |
868bb33f | 2723 | if (xen_enabled()) { |
432d268c JN |
2724 | /* We need to check if the requested address is in the RAM |
2725 | * because we don't want to map the entire memory in QEMU. | |
712c2b41 | 2726 | * In that case just map until the end of the page. |
432d268c JN |
2727 | */ |
2728 | if (block->offset == 0) { | |
e41d7c69 | 2729 | return xen_map_cache(addr, 0, 0); |
432d268c | 2730 | } else if (block->host == NULL) { |
e41d7c69 JK |
2731 | block->host = |
2732 | xen_map_cache(block->offset, block->length, 1); | |
432d268c JN |
2733 | } |
2734 | } | |
f471a17e AW |
2735 | return block->host + (addr - block->offset); |
2736 | } | |
94a6b54f | 2737 | } |
f471a17e AW |
2738 | |
2739 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
2740 | abort(); | |
2741 | ||
2742 | return NULL; | |
dc828ca1 PB |
2743 | } |
2744 | ||
b2e0a138 MT |
2745 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
2746 | * Same as qemu_get_ram_ptr but avoid reordering ramblocks. | |
2747 | */ | |
2748 | void *qemu_safe_ram_ptr(ram_addr_t addr) | |
2749 | { | |
2750 | RAMBlock *block; | |
2751 | ||
2752 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2753 | if (addr - block->offset < block->length) { | |
868bb33f | 2754 | if (xen_enabled()) { |
432d268c JN |
2755 | /* We need to check if the requested address is in the RAM |
2756 | * because we don't want to map the entire memory in QEMU. | |
712c2b41 | 2757 | * In that case just map until the end of the page. |
432d268c JN |
2758 | */ |
2759 | if (block->offset == 0) { | |
e41d7c69 | 2760 | return xen_map_cache(addr, 0, 0); |
432d268c | 2761 | } else if (block->host == NULL) { |
e41d7c69 JK |
2762 | block->host = |
2763 | xen_map_cache(block->offset, block->length, 1); | |
432d268c JN |
2764 | } |
2765 | } | |
b2e0a138 MT |
2766 | return block->host + (addr - block->offset); |
2767 | } | |
2768 | } | |
2769 | ||
2770 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
2771 | abort(); | |
2772 | ||
2773 | return NULL; | |
2774 | } | |
2775 | ||
38bee5dc SS |
2776 | /* Return a host pointer to guest's ram. Similar to qemu_get_ram_ptr |
2777 | * but takes a size argument */ | |
8ab934f9 | 2778 | void *qemu_ram_ptr_length(ram_addr_t addr, ram_addr_t *size) |
38bee5dc | 2779 | { |
8ab934f9 SS |
2780 | if (*size == 0) { |
2781 | return NULL; | |
2782 | } | |
868bb33f | 2783 | if (xen_enabled()) { |
e41d7c69 | 2784 | return xen_map_cache(addr, *size, 1); |
868bb33f | 2785 | } else { |
38bee5dc SS |
2786 | RAMBlock *block; |
2787 | ||
2788 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2789 | if (addr - block->offset < block->length) { | |
2790 | if (addr - block->offset + *size > block->length) | |
2791 | *size = block->length - addr + block->offset; | |
2792 | return block->host + (addr - block->offset); | |
2793 | } | |
2794 | } | |
2795 | ||
2796 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
2797 | abort(); | |
38bee5dc SS |
2798 | } |
2799 | } | |
2800 | ||
050a0ddf AP |
2801 | void qemu_put_ram_ptr(void *addr) |
2802 | { | |
2803 | trace_qemu_put_ram_ptr(addr); | |
050a0ddf AP |
2804 | } |
2805 | ||
e890261f | 2806 | int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) |
5579c7f3 | 2807 | { |
94a6b54f PB |
2808 | RAMBlock *block; |
2809 | uint8_t *host = ptr; | |
2810 | ||
868bb33f | 2811 | if (xen_enabled()) { |
e41d7c69 | 2812 | *ram_addr = xen_ram_addr_from_mapcache(ptr); |
712c2b41 SS |
2813 | return 0; |
2814 | } | |
2815 | ||
f471a17e | 2816 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
432d268c JN |
2817 | /* This case append when the block is not mapped. */ |
2818 | if (block->host == NULL) { | |
2819 | continue; | |
2820 | } | |
f471a17e | 2821 | if (host - block->host < block->length) { |
e890261f MT |
2822 | *ram_addr = block->offset + (host - block->host); |
2823 | return 0; | |
f471a17e | 2824 | } |
94a6b54f | 2825 | } |
432d268c | 2826 | |
e890261f MT |
2827 | return -1; |
2828 | } | |
f471a17e | 2829 | |
e890261f MT |
2830 | /* Some of the softmmu routines need to translate from a host pointer |
2831 | (typically a TLB entry) back to a ram offset. */ | |
2832 | ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr) | |
2833 | { | |
2834 | ram_addr_t ram_addr; | |
f471a17e | 2835 | |
e890261f MT |
2836 | if (qemu_ram_addr_from_host(ptr, &ram_addr)) { |
2837 | fprintf(stderr, "Bad ram pointer %p\n", ptr); | |
2838 | abort(); | |
2839 | } | |
2840 | return ram_addr; | |
5579c7f3 PB |
2841 | } |
2842 | ||
a8170e5e | 2843 | static uint64_t unassigned_mem_read(void *opaque, hwaddr addr, |
0e0df1e2 | 2844 | unsigned size) |
e18231a3 BS |
2845 | { |
2846 | #ifdef DEBUG_UNASSIGNED | |
2847 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); | |
2848 | #endif | |
5b450407 | 2849 | #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
0e0df1e2 | 2850 | cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, size); |
e18231a3 BS |
2851 | #endif |
2852 | return 0; | |
2853 | } | |
2854 | ||
a8170e5e | 2855 | static void unassigned_mem_write(void *opaque, hwaddr addr, |
0e0df1e2 | 2856 | uint64_t val, unsigned size) |
e18231a3 BS |
2857 | { |
2858 | #ifdef DEBUG_UNASSIGNED | |
0e0df1e2 | 2859 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val); |
e18231a3 | 2860 | #endif |
5b450407 | 2861 | #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
0e0df1e2 | 2862 | cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, size); |
67d3b957 | 2863 | #endif |
33417e70 FB |
2864 | } |
2865 | ||
0e0df1e2 AK |
2866 | static const MemoryRegionOps unassigned_mem_ops = { |
2867 | .read = unassigned_mem_read, | |
2868 | .write = unassigned_mem_write, | |
2869 | .endianness = DEVICE_NATIVE_ENDIAN, | |
2870 | }; | |
e18231a3 | 2871 | |
a8170e5e | 2872 | static uint64_t error_mem_read(void *opaque, hwaddr addr, |
0e0df1e2 | 2873 | unsigned size) |
e18231a3 | 2874 | { |
0e0df1e2 | 2875 | abort(); |
e18231a3 BS |
2876 | } |
2877 | ||
a8170e5e | 2878 | static void error_mem_write(void *opaque, hwaddr addr, |
0e0df1e2 | 2879 | uint64_t value, unsigned size) |
e18231a3 | 2880 | { |
0e0df1e2 | 2881 | abort(); |
33417e70 FB |
2882 | } |
2883 | ||
0e0df1e2 AK |
2884 | static const MemoryRegionOps error_mem_ops = { |
2885 | .read = error_mem_read, | |
2886 | .write = error_mem_write, | |
2887 | .endianness = DEVICE_NATIVE_ENDIAN, | |
33417e70 FB |
2888 | }; |
2889 | ||
0e0df1e2 AK |
2890 | static const MemoryRegionOps rom_mem_ops = { |
2891 | .read = error_mem_read, | |
2892 | .write = unassigned_mem_write, | |
2893 | .endianness = DEVICE_NATIVE_ENDIAN, | |
33417e70 FB |
2894 | }; |
2895 | ||
a8170e5e | 2896 | static void notdirty_mem_write(void *opaque, hwaddr ram_addr, |
0e0df1e2 | 2897 | uint64_t val, unsigned size) |
9fa3e853 | 2898 | { |
3a7d929e | 2899 | int dirty_flags; |
f7c11b53 | 2900 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
3a7d929e | 2901 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
9fa3e853 | 2902 | #if !defined(CONFIG_USER_ONLY) |
0e0df1e2 | 2903 | tb_invalidate_phys_page_fast(ram_addr, size); |
f7c11b53 | 2904 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
9fa3e853 | 2905 | #endif |
3a7d929e | 2906 | } |
0e0df1e2 AK |
2907 | switch (size) { |
2908 | case 1: | |
2909 | stb_p(qemu_get_ram_ptr(ram_addr), val); | |
2910 | break; | |
2911 | case 2: | |
2912 | stw_p(qemu_get_ram_ptr(ram_addr), val); | |
2913 | break; | |
2914 | case 4: | |
2915 | stl_p(qemu_get_ram_ptr(ram_addr), val); | |
2916 | break; | |
2917 | default: | |
2918 | abort(); | |
3a7d929e | 2919 | } |
f23db169 | 2920 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
f7c11b53 | 2921 | cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); |
f23db169 FB |
2922 | /* we remove the notdirty callback only if the code has been |
2923 | flushed */ | |
2924 | if (dirty_flags == 0xff) | |
2e70f6ef | 2925 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
9fa3e853 FB |
2926 | } |
2927 | ||
0e0df1e2 AK |
2928 | static const MemoryRegionOps notdirty_mem_ops = { |
2929 | .read = error_mem_read, | |
2930 | .write = notdirty_mem_write, | |
2931 | .endianness = DEVICE_NATIVE_ENDIAN, | |
1ccde1cb FB |
2932 | }; |
2933 | ||
0f459d16 | 2934 | /* Generate a debug exception if a watchpoint has been hit. */ |
b4051334 | 2935 | static void check_watchpoint(int offset, int len_mask, int flags) |
0f459d16 | 2936 | { |
9349b4f9 | 2937 | CPUArchState *env = cpu_single_env; |
06d55cc1 AL |
2938 | target_ulong pc, cs_base; |
2939 | TranslationBlock *tb; | |
0f459d16 | 2940 | target_ulong vaddr; |
a1d1bb31 | 2941 | CPUWatchpoint *wp; |
06d55cc1 | 2942 | int cpu_flags; |
0f459d16 | 2943 | |
06d55cc1 AL |
2944 | if (env->watchpoint_hit) { |
2945 | /* We re-entered the check after replacing the TB. Now raise | |
2946 | * the debug interrupt so that is will trigger after the | |
2947 | * current instruction. */ | |
2948 | cpu_interrupt(env, CPU_INTERRUPT_DEBUG); | |
2949 | return; | |
2950 | } | |
2e70f6ef | 2951 | vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset; |
72cf2d4f | 2952 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 AL |
2953 | if ((vaddr == (wp->vaddr & len_mask) || |
2954 | (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) { | |
6e140f28 AL |
2955 | wp->flags |= BP_WATCHPOINT_HIT; |
2956 | if (!env->watchpoint_hit) { | |
2957 | env->watchpoint_hit = wp; | |
2958 | tb = tb_find_pc(env->mem_io_pc); | |
2959 | if (!tb) { | |
2960 | cpu_abort(env, "check_watchpoint: could not find TB for " | |
2961 | "pc=%p", (void *)env->mem_io_pc); | |
2962 | } | |
618ba8e6 | 2963 | cpu_restore_state(tb, env, env->mem_io_pc); |
6e140f28 AL |
2964 | tb_phys_invalidate(tb, -1); |
2965 | if (wp->flags & BP_STOP_BEFORE_ACCESS) { | |
2966 | env->exception_index = EXCP_DEBUG; | |
488d6577 | 2967 | cpu_loop_exit(env); |
6e140f28 AL |
2968 | } else { |
2969 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags); | |
2970 | tb_gen_code(env, pc, cs_base, cpu_flags, 1); | |
488d6577 | 2971 | cpu_resume_from_signal(env, NULL); |
6e140f28 | 2972 | } |
06d55cc1 | 2973 | } |
6e140f28 AL |
2974 | } else { |
2975 | wp->flags &= ~BP_WATCHPOINT_HIT; | |
0f459d16 PB |
2976 | } |
2977 | } | |
2978 | } | |
2979 | ||
6658ffb8 PB |
2980 | /* Watchpoint access routines. Watchpoints are inserted using TLB tricks, |
2981 | so these check for a hit then pass through to the normal out-of-line | |
2982 | phys routines. */ | |
a8170e5e | 2983 | static uint64_t watch_mem_read(void *opaque, hwaddr addr, |
1ec9b909 | 2984 | unsigned size) |
6658ffb8 | 2985 | { |
1ec9b909 AK |
2986 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_READ); |
2987 | switch (size) { | |
2988 | case 1: return ldub_phys(addr); | |
2989 | case 2: return lduw_phys(addr); | |
2990 | case 4: return ldl_phys(addr); | |
2991 | default: abort(); | |
2992 | } | |
6658ffb8 PB |
2993 | } |
2994 | ||
a8170e5e | 2995 | static void watch_mem_write(void *opaque, hwaddr addr, |
1ec9b909 | 2996 | uint64_t val, unsigned size) |
6658ffb8 | 2997 | { |
1ec9b909 AK |
2998 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_WRITE); |
2999 | switch (size) { | |
67364150 MF |
3000 | case 1: |
3001 | stb_phys(addr, val); | |
3002 | break; | |
3003 | case 2: | |
3004 | stw_phys(addr, val); | |
3005 | break; | |
3006 | case 4: | |
3007 | stl_phys(addr, val); | |
3008 | break; | |
1ec9b909 AK |
3009 | default: abort(); |
3010 | } | |
6658ffb8 PB |
3011 | } |
3012 | ||
1ec9b909 AK |
3013 | static const MemoryRegionOps watch_mem_ops = { |
3014 | .read = watch_mem_read, | |
3015 | .write = watch_mem_write, | |
3016 | .endianness = DEVICE_NATIVE_ENDIAN, | |
6658ffb8 | 3017 | }; |
6658ffb8 | 3018 | |
a8170e5e | 3019 | static uint64_t subpage_read(void *opaque, hwaddr addr, |
70c68e44 | 3020 | unsigned len) |
db7b5426 | 3021 | { |
70c68e44 | 3022 | subpage_t *mmio = opaque; |
f6405247 | 3023 | unsigned int idx = SUBPAGE_IDX(addr); |
5312bd8b | 3024 | MemoryRegionSection *section; |
db7b5426 BS |
3025 | #if defined(DEBUG_SUBPAGE) |
3026 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d\n", __func__, | |
3027 | mmio, len, addr, idx); | |
3028 | #endif | |
db7b5426 | 3029 | |
5312bd8b AK |
3030 | section = &phys_sections[mmio->sub_section[idx]]; |
3031 | addr += mmio->base; | |
3032 | addr -= section->offset_within_address_space; | |
3033 | addr += section->offset_within_region; | |
37ec01d4 | 3034 | return io_mem_read(section->mr, addr, len); |
db7b5426 BS |
3035 | } |
3036 | ||
a8170e5e | 3037 | static void subpage_write(void *opaque, hwaddr addr, |
70c68e44 | 3038 | uint64_t value, unsigned len) |
db7b5426 | 3039 | { |
70c68e44 | 3040 | subpage_t *mmio = opaque; |
f6405247 | 3041 | unsigned int idx = SUBPAGE_IDX(addr); |
5312bd8b | 3042 | MemoryRegionSection *section; |
db7b5426 | 3043 | #if defined(DEBUG_SUBPAGE) |
70c68e44 AK |
3044 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx |
3045 | " idx %d value %"PRIx64"\n", | |
f6405247 | 3046 | __func__, mmio, len, addr, idx, value); |
db7b5426 | 3047 | #endif |
f6405247 | 3048 | |
5312bd8b AK |
3049 | section = &phys_sections[mmio->sub_section[idx]]; |
3050 | addr += mmio->base; | |
3051 | addr -= section->offset_within_address_space; | |
3052 | addr += section->offset_within_region; | |
37ec01d4 | 3053 | io_mem_write(section->mr, addr, value, len); |
db7b5426 BS |
3054 | } |
3055 | ||
70c68e44 AK |
3056 | static const MemoryRegionOps subpage_ops = { |
3057 | .read = subpage_read, | |
3058 | .write = subpage_write, | |
3059 | .endianness = DEVICE_NATIVE_ENDIAN, | |
db7b5426 BS |
3060 | }; |
3061 | ||
a8170e5e | 3062 | static uint64_t subpage_ram_read(void *opaque, hwaddr addr, |
de712f94 | 3063 | unsigned size) |
56384e8b AF |
3064 | { |
3065 | ram_addr_t raddr = addr; | |
3066 | void *ptr = qemu_get_ram_ptr(raddr); | |
de712f94 AK |
3067 | switch (size) { |
3068 | case 1: return ldub_p(ptr); | |
3069 | case 2: return lduw_p(ptr); | |
3070 | case 4: return ldl_p(ptr); | |
3071 | default: abort(); | |
3072 | } | |
56384e8b AF |
3073 | } |
3074 | ||
a8170e5e | 3075 | static void subpage_ram_write(void *opaque, hwaddr addr, |
de712f94 | 3076 | uint64_t value, unsigned size) |
56384e8b AF |
3077 | { |
3078 | ram_addr_t raddr = addr; | |
3079 | void *ptr = qemu_get_ram_ptr(raddr); | |
de712f94 AK |
3080 | switch (size) { |
3081 | case 1: return stb_p(ptr, value); | |
3082 | case 2: return stw_p(ptr, value); | |
3083 | case 4: return stl_p(ptr, value); | |
3084 | default: abort(); | |
3085 | } | |
56384e8b AF |
3086 | } |
3087 | ||
de712f94 AK |
3088 | static const MemoryRegionOps subpage_ram_ops = { |
3089 | .read = subpage_ram_read, | |
3090 | .write = subpage_ram_write, | |
3091 | .endianness = DEVICE_NATIVE_ENDIAN, | |
56384e8b AF |
3092 | }; |
3093 | ||
c227f099 | 3094 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 3095 | uint16_t section) |
db7b5426 BS |
3096 | { |
3097 | int idx, eidx; | |
3098 | ||
3099 | if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE) | |
3100 | return -1; | |
3101 | idx = SUBPAGE_IDX(start); | |
3102 | eidx = SUBPAGE_IDX(end); | |
3103 | #if defined(DEBUG_SUBPAGE) | |
0bf9e31a | 3104 | printf("%s: %p start %08x end %08x idx %08x eidx %08x mem %ld\n", __func__, |
db7b5426 BS |
3105 | mmio, start, end, idx, eidx, memory); |
3106 | #endif | |
5312bd8b AK |
3107 | if (memory_region_is_ram(phys_sections[section].mr)) { |
3108 | MemoryRegionSection new_section = phys_sections[section]; | |
3109 | new_section.mr = &io_mem_subpage_ram; | |
3110 | section = phys_section_add(&new_section); | |
56384e8b | 3111 | } |
db7b5426 | 3112 | for (; idx <= eidx; idx++) { |
5312bd8b | 3113 | mmio->sub_section[idx] = section; |
db7b5426 BS |
3114 | } |
3115 | ||
3116 | return 0; | |
3117 | } | |
3118 | ||
a8170e5e | 3119 | static subpage_t *subpage_init(hwaddr base) |
db7b5426 | 3120 | { |
c227f099 | 3121 | subpage_t *mmio; |
db7b5426 | 3122 | |
7267c094 | 3123 | mmio = g_malloc0(sizeof(subpage_t)); |
1eec614b AL |
3124 | |
3125 | mmio->base = base; | |
70c68e44 AK |
3126 | memory_region_init_io(&mmio->iomem, &subpage_ops, mmio, |
3127 | "subpage", TARGET_PAGE_SIZE); | |
b3b00c78 | 3128 | mmio->iomem.subpage = true; |
db7b5426 | 3129 | #if defined(DEBUG_SUBPAGE) |
1eec614b AL |
3130 | printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__, |
3131 | mmio, base, TARGET_PAGE_SIZE, subpage_memory); | |
db7b5426 | 3132 | #endif |
0f0cb164 | 3133 | subpage_register(mmio, 0, TARGET_PAGE_SIZE-1, phys_section_unassigned); |
db7b5426 BS |
3134 | |
3135 | return mmio; | |
3136 | } | |
3137 | ||
5312bd8b AK |
3138 | static uint16_t dummy_section(MemoryRegion *mr) |
3139 | { | |
3140 | MemoryRegionSection section = { | |
3141 | .mr = mr, | |
3142 | .offset_within_address_space = 0, | |
3143 | .offset_within_region = 0, | |
3144 | .size = UINT64_MAX, | |
3145 | }; | |
3146 | ||
3147 | return phys_section_add(§ion); | |
3148 | } | |
3149 | ||
a8170e5e | 3150 | MemoryRegion *iotlb_to_region(hwaddr index) |
aa102231 | 3151 | { |
37ec01d4 | 3152 | return phys_sections[index & ~TARGET_PAGE_MASK].mr; |
aa102231 AK |
3153 | } |
3154 | ||
e9179ce1 AK |
3155 | static void io_mem_init(void) |
3156 | { | |
0e0df1e2 | 3157 | memory_region_init_io(&io_mem_ram, &error_mem_ops, NULL, "ram", UINT64_MAX); |
0e0df1e2 AK |
3158 | memory_region_init_io(&io_mem_rom, &rom_mem_ops, NULL, "rom", UINT64_MAX); |
3159 | memory_region_init_io(&io_mem_unassigned, &unassigned_mem_ops, NULL, | |
3160 | "unassigned", UINT64_MAX); | |
3161 | memory_region_init_io(&io_mem_notdirty, ¬dirty_mem_ops, NULL, | |
3162 | "notdirty", UINT64_MAX); | |
de712f94 AK |
3163 | memory_region_init_io(&io_mem_subpage_ram, &subpage_ram_ops, NULL, |
3164 | "subpage-ram", UINT64_MAX); | |
1ec9b909 AK |
3165 | memory_region_init_io(&io_mem_watch, &watch_mem_ops, NULL, |
3166 | "watch", UINT64_MAX); | |
e9179ce1 AK |
3167 | } |
3168 | ||
ac1970fb AK |
3169 | static void mem_begin(MemoryListener *listener) |
3170 | { | |
3171 | AddressSpaceDispatch *d = container_of(listener, AddressSpaceDispatch, listener); | |
3172 | ||
3173 | destroy_all_mappings(d); | |
3174 | d->phys_map.ptr = PHYS_MAP_NODE_NIL; | |
3175 | } | |
3176 | ||
50c1e149 AK |
3177 | static void core_begin(MemoryListener *listener) |
3178 | { | |
5312bd8b AK |
3179 | phys_sections_clear(); |
3180 | phys_section_unassigned = dummy_section(&io_mem_unassigned); | |
aa102231 AK |
3181 | phys_section_notdirty = dummy_section(&io_mem_notdirty); |
3182 | phys_section_rom = dummy_section(&io_mem_rom); | |
3183 | phys_section_watch = dummy_section(&io_mem_watch); | |
50c1e149 AK |
3184 | } |
3185 | ||
1d71148e | 3186 | static void tcg_commit(MemoryListener *listener) |
50c1e149 | 3187 | { |
9349b4f9 | 3188 | CPUArchState *env; |
117712c3 AK |
3189 | |
3190 | /* since each CPU stores ram addresses in its TLB cache, we must | |
3191 | reset the modified entries */ | |
3192 | /* XXX: slow ! */ | |
3193 | for(env = first_cpu; env != NULL; env = env->next_cpu) { | |
3194 | tlb_flush(env, 1); | |
3195 | } | |
50c1e149 AK |
3196 | } |
3197 | ||
93632747 AK |
3198 | static void core_log_global_start(MemoryListener *listener) |
3199 | { | |
3200 | cpu_physical_memory_set_dirty_tracking(1); | |
3201 | } | |
3202 | ||
3203 | static void core_log_global_stop(MemoryListener *listener) | |
3204 | { | |
3205 | cpu_physical_memory_set_dirty_tracking(0); | |
3206 | } | |
3207 | ||
4855d41a AK |
3208 | static void io_region_add(MemoryListener *listener, |
3209 | MemoryRegionSection *section) | |
3210 | { | |
a2d33521 AK |
3211 | MemoryRegionIORange *mrio = g_new(MemoryRegionIORange, 1); |
3212 | ||
3213 | mrio->mr = section->mr; | |
3214 | mrio->offset = section->offset_within_region; | |
3215 | iorange_init(&mrio->iorange, &memory_region_iorange_ops, | |
4855d41a | 3216 | section->offset_within_address_space, section->size); |
a2d33521 | 3217 | ioport_register(&mrio->iorange); |
4855d41a AK |
3218 | } |
3219 | ||
3220 | static void io_region_del(MemoryListener *listener, | |
3221 | MemoryRegionSection *section) | |
3222 | { | |
3223 | isa_unassign_ioport(section->offset_within_address_space, section->size); | |
3224 | } | |
3225 | ||
93632747 | 3226 | static MemoryListener core_memory_listener = { |
50c1e149 | 3227 | .begin = core_begin, |
93632747 AK |
3228 | .log_global_start = core_log_global_start, |
3229 | .log_global_stop = core_log_global_stop, | |
ac1970fb | 3230 | .priority = 1, |
93632747 AK |
3231 | }; |
3232 | ||
4855d41a AK |
3233 | static MemoryListener io_memory_listener = { |
3234 | .region_add = io_region_add, | |
3235 | .region_del = io_region_del, | |
4855d41a AK |
3236 | .priority = 0, |
3237 | }; | |
3238 | ||
1d71148e AK |
3239 | static MemoryListener tcg_memory_listener = { |
3240 | .commit = tcg_commit, | |
3241 | }; | |
3242 | ||
ac1970fb AK |
3243 | void address_space_init_dispatch(AddressSpace *as) |
3244 | { | |
3245 | AddressSpaceDispatch *d = g_new(AddressSpaceDispatch, 1); | |
3246 | ||
3247 | d->phys_map = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .is_leaf = 0 }; | |
3248 | d->listener = (MemoryListener) { | |
3249 | .begin = mem_begin, | |
3250 | .region_add = mem_add, | |
3251 | .region_nop = mem_add, | |
3252 | .priority = 0, | |
3253 | }; | |
3254 | as->dispatch = d; | |
3255 | memory_listener_register(&d->listener, as); | |
3256 | } | |
3257 | ||
83f3c251 AK |
3258 | void address_space_destroy_dispatch(AddressSpace *as) |
3259 | { | |
3260 | AddressSpaceDispatch *d = as->dispatch; | |
3261 | ||
3262 | memory_listener_unregister(&d->listener); | |
3263 | destroy_l2_mapping(&d->phys_map, P_L2_LEVELS - 1); | |
3264 | g_free(d); | |
3265 | as->dispatch = NULL; | |
3266 | } | |
3267 | ||
62152b8a AK |
3268 | static void memory_map_init(void) |
3269 | { | |
7267c094 | 3270 | system_memory = g_malloc(sizeof(*system_memory)); |
8417cebf | 3271 | memory_region_init(system_memory, "system", INT64_MAX); |
2673a5da AK |
3272 | address_space_init(&address_space_memory, system_memory); |
3273 | address_space_memory.name = "memory"; | |
309cb471 | 3274 | |
7267c094 | 3275 | system_io = g_malloc(sizeof(*system_io)); |
309cb471 | 3276 | memory_region_init(system_io, "io", 65536); |
2673a5da AK |
3277 | address_space_init(&address_space_io, system_io); |
3278 | address_space_io.name = "I/O"; | |
93632747 | 3279 | |
f6790af6 AK |
3280 | memory_listener_register(&core_memory_listener, &address_space_memory); |
3281 | memory_listener_register(&io_memory_listener, &address_space_io); | |
3282 | memory_listener_register(&tcg_memory_listener, &address_space_memory); | |
62152b8a AK |
3283 | } |
3284 | ||
3285 | MemoryRegion *get_system_memory(void) | |
3286 | { | |
3287 | return system_memory; | |
3288 | } | |
3289 | ||
309cb471 AK |
3290 | MemoryRegion *get_system_io(void) |
3291 | { | |
3292 | return system_io; | |
3293 | } | |
3294 | ||
e2eef170 PB |
3295 | #endif /* !defined(CONFIG_USER_ONLY) */ |
3296 | ||
13eb76e0 FB |
3297 | /* physical memory access (slow version, mainly for debug) */ |
3298 | #if defined(CONFIG_USER_ONLY) | |
9349b4f9 | 3299 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
a68fe89c | 3300 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
3301 | { |
3302 | int l, flags; | |
3303 | target_ulong page; | |
53a5960a | 3304 | void * p; |
13eb76e0 FB |
3305 | |
3306 | while (len > 0) { | |
3307 | page = addr & TARGET_PAGE_MASK; | |
3308 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3309 | if (l > len) | |
3310 | l = len; | |
3311 | flags = page_get_flags(page); | |
3312 | if (!(flags & PAGE_VALID)) | |
a68fe89c | 3313 | return -1; |
13eb76e0 FB |
3314 | if (is_write) { |
3315 | if (!(flags & PAGE_WRITE)) | |
a68fe89c | 3316 | return -1; |
579a97f7 | 3317 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 3318 | if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
a68fe89c | 3319 | return -1; |
72fb7daa AJ |
3320 | memcpy(p, buf, l); |
3321 | unlock_user(p, addr, l); | |
13eb76e0 FB |
3322 | } else { |
3323 | if (!(flags & PAGE_READ)) | |
a68fe89c | 3324 | return -1; |
579a97f7 | 3325 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 3326 | if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
a68fe89c | 3327 | return -1; |
72fb7daa | 3328 | memcpy(buf, p, l); |
5b257578 | 3329 | unlock_user(p, addr, 0); |
13eb76e0 FB |
3330 | } |
3331 | len -= l; | |
3332 | buf += l; | |
3333 | addr += l; | |
3334 | } | |
a68fe89c | 3335 | return 0; |
13eb76e0 | 3336 | } |
8df1cd07 | 3337 | |
13eb76e0 | 3338 | #else |
51d7a9eb | 3339 | |
a8170e5e AK |
3340 | static void invalidate_and_set_dirty(hwaddr addr, |
3341 | hwaddr length) | |
51d7a9eb AP |
3342 | { |
3343 | if (!cpu_physical_memory_is_dirty(addr)) { | |
3344 | /* invalidate code */ | |
3345 | tb_invalidate_phys_page_range(addr, addr + length, 0); | |
3346 | /* set dirty bit */ | |
3347 | cpu_physical_memory_set_dirty_flags(addr, (0xff & ~CODE_DIRTY_FLAG)); | |
3348 | } | |
e226939d | 3349 | xen_modified_memory(addr, length); |
51d7a9eb AP |
3350 | } |
3351 | ||
a8170e5e | 3352 | void address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf, |
ac1970fb | 3353 | int len, bool is_write) |
13eb76e0 | 3354 | { |
ac1970fb | 3355 | AddressSpaceDispatch *d = as->dispatch; |
37ec01d4 | 3356 | int l; |
13eb76e0 FB |
3357 | uint8_t *ptr; |
3358 | uint32_t val; | |
a8170e5e | 3359 | hwaddr page; |
f3705d53 | 3360 | MemoryRegionSection *section; |
3b46e624 | 3361 | |
13eb76e0 FB |
3362 | while (len > 0) { |
3363 | page = addr & TARGET_PAGE_MASK; | |
3364 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3365 | if (l > len) | |
3366 | l = len; | |
ac1970fb | 3367 | section = phys_page_find(d, page >> TARGET_PAGE_BITS); |
3b46e624 | 3368 | |
13eb76e0 | 3369 | if (is_write) { |
f3705d53 | 3370 | if (!memory_region_is_ram(section->mr)) { |
a8170e5e | 3371 | hwaddr addr1; |
cc5bea60 | 3372 | addr1 = memory_region_section_addr(section, addr); |
6a00d601 FB |
3373 | /* XXX: could force cpu_single_env to NULL to avoid |
3374 | potential bugs */ | |
6c2934db | 3375 | if (l >= 4 && ((addr1 & 3) == 0)) { |
1c213d19 | 3376 | /* 32 bit write access */ |
c27004ec | 3377 | val = ldl_p(buf); |
37ec01d4 | 3378 | io_mem_write(section->mr, addr1, val, 4); |
13eb76e0 | 3379 | l = 4; |
6c2934db | 3380 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
1c213d19 | 3381 | /* 16 bit write access */ |
c27004ec | 3382 | val = lduw_p(buf); |
37ec01d4 | 3383 | io_mem_write(section->mr, addr1, val, 2); |
13eb76e0 FB |
3384 | l = 2; |
3385 | } else { | |
1c213d19 | 3386 | /* 8 bit write access */ |
c27004ec | 3387 | val = ldub_p(buf); |
37ec01d4 | 3388 | io_mem_write(section->mr, addr1, val, 1); |
13eb76e0 FB |
3389 | l = 1; |
3390 | } | |
f3705d53 | 3391 | } else if (!section->readonly) { |
8ca5692d | 3392 | ram_addr_t addr1; |
f3705d53 | 3393 | addr1 = memory_region_get_ram_addr(section->mr) |
cc5bea60 | 3394 | + memory_region_section_addr(section, addr); |
13eb76e0 | 3395 | /* RAM case */ |
5579c7f3 | 3396 | ptr = qemu_get_ram_ptr(addr1); |
13eb76e0 | 3397 | memcpy(ptr, buf, l); |
51d7a9eb | 3398 | invalidate_and_set_dirty(addr1, l); |
050a0ddf | 3399 | qemu_put_ram_ptr(ptr); |
13eb76e0 FB |
3400 | } |
3401 | } else { | |
cc5bea60 BS |
3402 | if (!(memory_region_is_ram(section->mr) || |
3403 | memory_region_is_romd(section->mr))) { | |
a8170e5e | 3404 | hwaddr addr1; |
13eb76e0 | 3405 | /* I/O case */ |
cc5bea60 | 3406 | addr1 = memory_region_section_addr(section, addr); |
6c2934db | 3407 | if (l >= 4 && ((addr1 & 3) == 0)) { |
13eb76e0 | 3408 | /* 32 bit read access */ |
37ec01d4 | 3409 | val = io_mem_read(section->mr, addr1, 4); |
c27004ec | 3410 | stl_p(buf, val); |
13eb76e0 | 3411 | l = 4; |
6c2934db | 3412 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
13eb76e0 | 3413 | /* 16 bit read access */ |
37ec01d4 | 3414 | val = io_mem_read(section->mr, addr1, 2); |
c27004ec | 3415 | stw_p(buf, val); |
13eb76e0 FB |
3416 | l = 2; |
3417 | } else { | |
1c213d19 | 3418 | /* 8 bit read access */ |
37ec01d4 | 3419 | val = io_mem_read(section->mr, addr1, 1); |
c27004ec | 3420 | stb_p(buf, val); |
13eb76e0 FB |
3421 | l = 1; |
3422 | } | |
3423 | } else { | |
3424 | /* RAM case */ | |
0a1b357f | 3425 | ptr = qemu_get_ram_ptr(section->mr->ram_addr |
cc5bea60 BS |
3426 | + memory_region_section_addr(section, |
3427 | addr)); | |
f3705d53 | 3428 | memcpy(buf, ptr, l); |
050a0ddf | 3429 | qemu_put_ram_ptr(ptr); |
13eb76e0 FB |
3430 | } |
3431 | } | |
3432 | len -= l; | |
3433 | buf += l; | |
3434 | addr += l; | |
3435 | } | |
3436 | } | |
8df1cd07 | 3437 | |
a8170e5e | 3438 | void address_space_write(AddressSpace *as, hwaddr addr, |
ac1970fb AK |
3439 | const uint8_t *buf, int len) |
3440 | { | |
3441 | address_space_rw(as, addr, (uint8_t *)buf, len, true); | |
3442 | } | |
3443 | ||
3444 | /** | |
3445 | * address_space_read: read from an address space. | |
3446 | * | |
3447 | * @as: #AddressSpace to be accessed | |
3448 | * @addr: address within that address space | |
3449 | * @buf: buffer with the data transferred | |
3450 | */ | |
a8170e5e | 3451 | void address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len) |
ac1970fb AK |
3452 | { |
3453 | address_space_rw(as, addr, buf, len, false); | |
3454 | } | |
3455 | ||
3456 | ||
a8170e5e | 3457 | void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf, |
ac1970fb AK |
3458 | int len, int is_write) |
3459 | { | |
3460 | return address_space_rw(&address_space_memory, addr, buf, len, is_write); | |
3461 | } | |
3462 | ||
d0ecd2aa | 3463 | /* used for ROM loading : can write in RAM and ROM */ |
a8170e5e | 3464 | void cpu_physical_memory_write_rom(hwaddr addr, |
d0ecd2aa FB |
3465 | const uint8_t *buf, int len) |
3466 | { | |
ac1970fb | 3467 | AddressSpaceDispatch *d = address_space_memory.dispatch; |
d0ecd2aa FB |
3468 | int l; |
3469 | uint8_t *ptr; | |
a8170e5e | 3470 | hwaddr page; |
f3705d53 | 3471 | MemoryRegionSection *section; |
3b46e624 | 3472 | |
d0ecd2aa FB |
3473 | while (len > 0) { |
3474 | page = addr & TARGET_PAGE_MASK; | |
3475 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3476 | if (l > len) | |
3477 | l = len; | |
ac1970fb | 3478 | section = phys_page_find(d, page >> TARGET_PAGE_BITS); |
3b46e624 | 3479 | |
cc5bea60 BS |
3480 | if (!(memory_region_is_ram(section->mr) || |
3481 | memory_region_is_romd(section->mr))) { | |
d0ecd2aa FB |
3482 | /* do nothing */ |
3483 | } else { | |
3484 | unsigned long addr1; | |
f3705d53 | 3485 | addr1 = memory_region_get_ram_addr(section->mr) |
cc5bea60 | 3486 | + memory_region_section_addr(section, addr); |
d0ecd2aa | 3487 | /* ROM/RAM case */ |
5579c7f3 | 3488 | ptr = qemu_get_ram_ptr(addr1); |
d0ecd2aa | 3489 | memcpy(ptr, buf, l); |
51d7a9eb | 3490 | invalidate_and_set_dirty(addr1, l); |
050a0ddf | 3491 | qemu_put_ram_ptr(ptr); |
d0ecd2aa FB |
3492 | } |
3493 | len -= l; | |
3494 | buf += l; | |
3495 | addr += l; | |
3496 | } | |
3497 | } | |
3498 | ||
6d16c2f8 AL |
3499 | typedef struct { |
3500 | void *buffer; | |
a8170e5e AK |
3501 | hwaddr addr; |
3502 | hwaddr len; | |
6d16c2f8 AL |
3503 | } BounceBuffer; |
3504 | ||
3505 | static BounceBuffer bounce; | |
3506 | ||
ba223c29 AL |
3507 | typedef struct MapClient { |
3508 | void *opaque; | |
3509 | void (*callback)(void *opaque); | |
72cf2d4f | 3510 | QLIST_ENTRY(MapClient) link; |
ba223c29 AL |
3511 | } MapClient; |
3512 | ||
72cf2d4f BS |
3513 | static QLIST_HEAD(map_client_list, MapClient) map_client_list |
3514 | = QLIST_HEAD_INITIALIZER(map_client_list); | |
ba223c29 AL |
3515 | |
3516 | void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)) | |
3517 | { | |
7267c094 | 3518 | MapClient *client = g_malloc(sizeof(*client)); |
ba223c29 AL |
3519 | |
3520 | client->opaque = opaque; | |
3521 | client->callback = callback; | |
72cf2d4f | 3522 | QLIST_INSERT_HEAD(&map_client_list, client, link); |
ba223c29 AL |
3523 | return client; |
3524 | } | |
3525 | ||
3526 | void cpu_unregister_map_client(void *_client) | |
3527 | { | |
3528 | MapClient *client = (MapClient *)_client; | |
3529 | ||
72cf2d4f | 3530 | QLIST_REMOVE(client, link); |
7267c094 | 3531 | g_free(client); |
ba223c29 AL |
3532 | } |
3533 | ||
3534 | static void cpu_notify_map_clients(void) | |
3535 | { | |
3536 | MapClient *client; | |
3537 | ||
72cf2d4f BS |
3538 | while (!QLIST_EMPTY(&map_client_list)) { |
3539 | client = QLIST_FIRST(&map_client_list); | |
ba223c29 | 3540 | client->callback(client->opaque); |
34d5e948 | 3541 | cpu_unregister_map_client(client); |
ba223c29 AL |
3542 | } |
3543 | } | |
3544 | ||
6d16c2f8 AL |
3545 | /* Map a physical memory region into a host virtual address. |
3546 | * May map a subset of the requested range, given by and returned in *plen. | |
3547 | * May return NULL if resources needed to perform the mapping are exhausted. | |
3548 | * Use only for reads OR writes - not for read-modify-write operations. | |
ba223c29 AL |
3549 | * Use cpu_register_map_client() to know when retrying the map operation is |
3550 | * likely to succeed. | |
6d16c2f8 | 3551 | */ |
ac1970fb | 3552 | void *address_space_map(AddressSpace *as, |
a8170e5e AK |
3553 | hwaddr addr, |
3554 | hwaddr *plen, | |
ac1970fb | 3555 | bool is_write) |
6d16c2f8 | 3556 | { |
ac1970fb | 3557 | AddressSpaceDispatch *d = as->dispatch; |
a8170e5e AK |
3558 | hwaddr len = *plen; |
3559 | hwaddr todo = 0; | |
6d16c2f8 | 3560 | int l; |
a8170e5e | 3561 | hwaddr page; |
f3705d53 | 3562 | MemoryRegionSection *section; |
f15fbc4b | 3563 | ram_addr_t raddr = RAM_ADDR_MAX; |
8ab934f9 SS |
3564 | ram_addr_t rlen; |
3565 | void *ret; | |
6d16c2f8 AL |
3566 | |
3567 | while (len > 0) { | |
3568 | page = addr & TARGET_PAGE_MASK; | |
3569 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3570 | if (l > len) | |
3571 | l = len; | |
ac1970fb | 3572 | section = phys_page_find(d, page >> TARGET_PAGE_BITS); |
6d16c2f8 | 3573 | |
f3705d53 | 3574 | if (!(memory_region_is_ram(section->mr) && !section->readonly)) { |
38bee5dc | 3575 | if (todo || bounce.buffer) { |
6d16c2f8 AL |
3576 | break; |
3577 | } | |
3578 | bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, TARGET_PAGE_SIZE); | |
3579 | bounce.addr = addr; | |
3580 | bounce.len = l; | |
3581 | if (!is_write) { | |
ac1970fb | 3582 | address_space_read(as, addr, bounce.buffer, l); |
6d16c2f8 | 3583 | } |
38bee5dc SS |
3584 | |
3585 | *plen = l; | |
3586 | return bounce.buffer; | |
6d16c2f8 | 3587 | } |
8ab934f9 | 3588 | if (!todo) { |
f3705d53 | 3589 | raddr = memory_region_get_ram_addr(section->mr) |
cc5bea60 | 3590 | + memory_region_section_addr(section, addr); |
8ab934f9 | 3591 | } |
6d16c2f8 AL |
3592 | |
3593 | len -= l; | |
3594 | addr += l; | |
38bee5dc | 3595 | todo += l; |
6d16c2f8 | 3596 | } |
8ab934f9 SS |
3597 | rlen = todo; |
3598 | ret = qemu_ram_ptr_length(raddr, &rlen); | |
3599 | *plen = rlen; | |
3600 | return ret; | |
6d16c2f8 AL |
3601 | } |
3602 | ||
ac1970fb | 3603 | /* Unmaps a memory region previously mapped by address_space_map(). |
6d16c2f8 AL |
3604 | * Will also mark the memory as dirty if is_write == 1. access_len gives |
3605 | * the amount of memory that was actually read or written by the caller. | |
3606 | */ | |
a8170e5e AK |
3607 | void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len, |
3608 | int is_write, hwaddr access_len) | |
6d16c2f8 AL |
3609 | { |
3610 | if (buffer != bounce.buffer) { | |
3611 | if (is_write) { | |
e890261f | 3612 | ram_addr_t addr1 = qemu_ram_addr_from_host_nofail(buffer); |
6d16c2f8 AL |
3613 | while (access_len) { |
3614 | unsigned l; | |
3615 | l = TARGET_PAGE_SIZE; | |
3616 | if (l > access_len) | |
3617 | l = access_len; | |
51d7a9eb | 3618 | invalidate_and_set_dirty(addr1, l); |
6d16c2f8 AL |
3619 | addr1 += l; |
3620 | access_len -= l; | |
3621 | } | |
3622 | } | |
868bb33f | 3623 | if (xen_enabled()) { |
e41d7c69 | 3624 | xen_invalidate_map_cache_entry(buffer); |
050a0ddf | 3625 | } |
6d16c2f8 AL |
3626 | return; |
3627 | } | |
3628 | if (is_write) { | |
ac1970fb | 3629 | address_space_write(as, bounce.addr, bounce.buffer, access_len); |
6d16c2f8 | 3630 | } |
f8a83245 | 3631 | qemu_vfree(bounce.buffer); |
6d16c2f8 | 3632 | bounce.buffer = NULL; |
ba223c29 | 3633 | cpu_notify_map_clients(); |
6d16c2f8 | 3634 | } |
d0ecd2aa | 3635 | |
a8170e5e AK |
3636 | void *cpu_physical_memory_map(hwaddr addr, |
3637 | hwaddr *plen, | |
ac1970fb AK |
3638 | int is_write) |
3639 | { | |
3640 | return address_space_map(&address_space_memory, addr, plen, is_write); | |
3641 | } | |
3642 | ||
a8170e5e AK |
3643 | void cpu_physical_memory_unmap(void *buffer, hwaddr len, |
3644 | int is_write, hwaddr access_len) | |
ac1970fb AK |
3645 | { |
3646 | return address_space_unmap(&address_space_memory, buffer, len, is_write, access_len); | |
3647 | } | |
3648 | ||
8df1cd07 | 3649 | /* warning: addr must be aligned */ |
a8170e5e | 3650 | static inline uint32_t ldl_phys_internal(hwaddr addr, |
1e78bcc1 | 3651 | enum device_endian endian) |
8df1cd07 | 3652 | { |
8df1cd07 FB |
3653 | uint8_t *ptr; |
3654 | uint32_t val; | |
f3705d53 | 3655 | MemoryRegionSection *section; |
8df1cd07 | 3656 | |
ac1970fb | 3657 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 3658 | |
cc5bea60 BS |
3659 | if (!(memory_region_is_ram(section->mr) || |
3660 | memory_region_is_romd(section->mr))) { | |
8df1cd07 | 3661 | /* I/O case */ |
cc5bea60 | 3662 | addr = memory_region_section_addr(section, addr); |
37ec01d4 | 3663 | val = io_mem_read(section->mr, addr, 4); |
1e78bcc1 AG |
3664 | #if defined(TARGET_WORDS_BIGENDIAN) |
3665 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
3666 | val = bswap32(val); | |
3667 | } | |
3668 | #else | |
3669 | if (endian == DEVICE_BIG_ENDIAN) { | |
3670 | val = bswap32(val); | |
3671 | } | |
3672 | #endif | |
8df1cd07 FB |
3673 | } else { |
3674 | /* RAM case */ | |
f3705d53 | 3675 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 3676 | & TARGET_PAGE_MASK) |
cc5bea60 | 3677 | + memory_region_section_addr(section, addr)); |
1e78bcc1 AG |
3678 | switch (endian) { |
3679 | case DEVICE_LITTLE_ENDIAN: | |
3680 | val = ldl_le_p(ptr); | |
3681 | break; | |
3682 | case DEVICE_BIG_ENDIAN: | |
3683 | val = ldl_be_p(ptr); | |
3684 | break; | |
3685 | default: | |
3686 | val = ldl_p(ptr); | |
3687 | break; | |
3688 | } | |
8df1cd07 FB |
3689 | } |
3690 | return val; | |
3691 | } | |
3692 | ||
a8170e5e | 3693 | uint32_t ldl_phys(hwaddr addr) |
1e78bcc1 AG |
3694 | { |
3695 | return ldl_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
3696 | } | |
3697 | ||
a8170e5e | 3698 | uint32_t ldl_le_phys(hwaddr addr) |
1e78bcc1 AG |
3699 | { |
3700 | return ldl_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
3701 | } | |
3702 | ||
a8170e5e | 3703 | uint32_t ldl_be_phys(hwaddr addr) |
1e78bcc1 AG |
3704 | { |
3705 | return ldl_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
3706 | } | |
3707 | ||
84b7b8e7 | 3708 | /* warning: addr must be aligned */ |
a8170e5e | 3709 | static inline uint64_t ldq_phys_internal(hwaddr addr, |
1e78bcc1 | 3710 | enum device_endian endian) |
84b7b8e7 | 3711 | { |
84b7b8e7 FB |
3712 | uint8_t *ptr; |
3713 | uint64_t val; | |
f3705d53 | 3714 | MemoryRegionSection *section; |
84b7b8e7 | 3715 | |
ac1970fb | 3716 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 3717 | |
cc5bea60 BS |
3718 | if (!(memory_region_is_ram(section->mr) || |
3719 | memory_region_is_romd(section->mr))) { | |
84b7b8e7 | 3720 | /* I/O case */ |
cc5bea60 | 3721 | addr = memory_region_section_addr(section, addr); |
1e78bcc1 AG |
3722 | |
3723 | /* XXX This is broken when device endian != cpu endian. | |
3724 | Fix and add "endian" variable check */ | |
84b7b8e7 | 3725 | #ifdef TARGET_WORDS_BIGENDIAN |
37ec01d4 AK |
3726 | val = io_mem_read(section->mr, addr, 4) << 32; |
3727 | val |= io_mem_read(section->mr, addr + 4, 4); | |
84b7b8e7 | 3728 | #else |
37ec01d4 AK |
3729 | val = io_mem_read(section->mr, addr, 4); |
3730 | val |= io_mem_read(section->mr, addr + 4, 4) << 32; | |
84b7b8e7 FB |
3731 | #endif |
3732 | } else { | |
3733 | /* RAM case */ | |
f3705d53 | 3734 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 3735 | & TARGET_PAGE_MASK) |
cc5bea60 | 3736 | + memory_region_section_addr(section, addr)); |
1e78bcc1 AG |
3737 | switch (endian) { |
3738 | case DEVICE_LITTLE_ENDIAN: | |
3739 | val = ldq_le_p(ptr); | |
3740 | break; | |
3741 | case DEVICE_BIG_ENDIAN: | |
3742 | val = ldq_be_p(ptr); | |
3743 | break; | |
3744 | default: | |
3745 | val = ldq_p(ptr); | |
3746 | break; | |
3747 | } | |
84b7b8e7 FB |
3748 | } |
3749 | return val; | |
3750 | } | |
3751 | ||
a8170e5e | 3752 | uint64_t ldq_phys(hwaddr addr) |
1e78bcc1 AG |
3753 | { |
3754 | return ldq_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
3755 | } | |
3756 | ||
a8170e5e | 3757 | uint64_t ldq_le_phys(hwaddr addr) |
1e78bcc1 AG |
3758 | { |
3759 | return ldq_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
3760 | } | |
3761 | ||
a8170e5e | 3762 | uint64_t ldq_be_phys(hwaddr addr) |
1e78bcc1 AG |
3763 | { |
3764 | return ldq_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
3765 | } | |
3766 | ||
aab33094 | 3767 | /* XXX: optimize */ |
a8170e5e | 3768 | uint32_t ldub_phys(hwaddr addr) |
aab33094 FB |
3769 | { |
3770 | uint8_t val; | |
3771 | cpu_physical_memory_read(addr, &val, 1); | |
3772 | return val; | |
3773 | } | |
3774 | ||
733f0b02 | 3775 | /* warning: addr must be aligned */ |
a8170e5e | 3776 | static inline uint32_t lduw_phys_internal(hwaddr addr, |
1e78bcc1 | 3777 | enum device_endian endian) |
aab33094 | 3778 | { |
733f0b02 MT |
3779 | uint8_t *ptr; |
3780 | uint64_t val; | |
f3705d53 | 3781 | MemoryRegionSection *section; |
733f0b02 | 3782 | |
ac1970fb | 3783 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
733f0b02 | 3784 | |
cc5bea60 BS |
3785 | if (!(memory_region_is_ram(section->mr) || |
3786 | memory_region_is_romd(section->mr))) { | |
733f0b02 | 3787 | /* I/O case */ |
cc5bea60 | 3788 | addr = memory_region_section_addr(section, addr); |
37ec01d4 | 3789 | val = io_mem_read(section->mr, addr, 2); |
1e78bcc1 AG |
3790 | #if defined(TARGET_WORDS_BIGENDIAN) |
3791 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
3792 | val = bswap16(val); | |
3793 | } | |
3794 | #else | |
3795 | if (endian == DEVICE_BIG_ENDIAN) { | |
3796 | val = bswap16(val); | |
3797 | } | |
3798 | #endif | |
733f0b02 MT |
3799 | } else { |
3800 | /* RAM case */ | |
f3705d53 | 3801 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 3802 | & TARGET_PAGE_MASK) |
cc5bea60 | 3803 | + memory_region_section_addr(section, addr)); |
1e78bcc1 AG |
3804 | switch (endian) { |
3805 | case DEVICE_LITTLE_ENDIAN: | |
3806 | val = lduw_le_p(ptr); | |
3807 | break; | |
3808 | case DEVICE_BIG_ENDIAN: | |
3809 | val = lduw_be_p(ptr); | |
3810 | break; | |
3811 | default: | |
3812 | val = lduw_p(ptr); | |
3813 | break; | |
3814 | } | |
733f0b02 MT |
3815 | } |
3816 | return val; | |
aab33094 FB |
3817 | } |
3818 | ||
a8170e5e | 3819 | uint32_t lduw_phys(hwaddr addr) |
1e78bcc1 AG |
3820 | { |
3821 | return lduw_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
3822 | } | |
3823 | ||
a8170e5e | 3824 | uint32_t lduw_le_phys(hwaddr addr) |
1e78bcc1 AG |
3825 | { |
3826 | return lduw_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
3827 | } | |
3828 | ||
a8170e5e | 3829 | uint32_t lduw_be_phys(hwaddr addr) |
1e78bcc1 AG |
3830 | { |
3831 | return lduw_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
3832 | } | |
3833 | ||
8df1cd07 FB |
3834 | /* warning: addr must be aligned. The ram page is not masked as dirty |
3835 | and the code inside is not invalidated. It is useful if the dirty | |
3836 | bits are used to track modified PTEs */ | |
a8170e5e | 3837 | void stl_phys_notdirty(hwaddr addr, uint32_t val) |
8df1cd07 | 3838 | { |
8df1cd07 | 3839 | uint8_t *ptr; |
f3705d53 | 3840 | MemoryRegionSection *section; |
8df1cd07 | 3841 | |
ac1970fb | 3842 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 3843 | |
f3705d53 | 3844 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 3845 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 3846 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 3847 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 3848 | } |
37ec01d4 | 3849 | io_mem_write(section->mr, addr, val, 4); |
8df1cd07 | 3850 | } else { |
f3705d53 | 3851 | unsigned long addr1 = (memory_region_get_ram_addr(section->mr) |
06ef3525 | 3852 | & TARGET_PAGE_MASK) |
cc5bea60 | 3853 | + memory_region_section_addr(section, addr); |
5579c7f3 | 3854 | ptr = qemu_get_ram_ptr(addr1); |
8df1cd07 | 3855 | stl_p(ptr, val); |
74576198 AL |
3856 | |
3857 | if (unlikely(in_migration)) { | |
3858 | if (!cpu_physical_memory_is_dirty(addr1)) { | |
3859 | /* invalidate code */ | |
3860 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); | |
3861 | /* set dirty bit */ | |
f7c11b53 YT |
3862 | cpu_physical_memory_set_dirty_flags( |
3863 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
74576198 AL |
3864 | } |
3865 | } | |
8df1cd07 FB |
3866 | } |
3867 | } | |
3868 | ||
a8170e5e | 3869 | void stq_phys_notdirty(hwaddr addr, uint64_t val) |
bc98a7ef | 3870 | { |
bc98a7ef | 3871 | uint8_t *ptr; |
f3705d53 | 3872 | MemoryRegionSection *section; |
bc98a7ef | 3873 | |
ac1970fb | 3874 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 3875 | |
f3705d53 | 3876 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 3877 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 3878 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 3879 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 3880 | } |
bc98a7ef | 3881 | #ifdef TARGET_WORDS_BIGENDIAN |
37ec01d4 AK |
3882 | io_mem_write(section->mr, addr, val >> 32, 4); |
3883 | io_mem_write(section->mr, addr + 4, (uint32_t)val, 4); | |
bc98a7ef | 3884 | #else |
37ec01d4 AK |
3885 | io_mem_write(section->mr, addr, (uint32_t)val, 4); |
3886 | io_mem_write(section->mr, addr + 4, val >> 32, 4); | |
bc98a7ef JM |
3887 | #endif |
3888 | } else { | |
f3705d53 | 3889 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 3890 | & TARGET_PAGE_MASK) |
cc5bea60 | 3891 | + memory_region_section_addr(section, addr)); |
bc98a7ef JM |
3892 | stq_p(ptr, val); |
3893 | } | |
3894 | } | |
3895 | ||
8df1cd07 | 3896 | /* warning: addr must be aligned */ |
a8170e5e | 3897 | static inline void stl_phys_internal(hwaddr addr, uint32_t val, |
1e78bcc1 | 3898 | enum device_endian endian) |
8df1cd07 | 3899 | { |
8df1cd07 | 3900 | uint8_t *ptr; |
f3705d53 | 3901 | MemoryRegionSection *section; |
8df1cd07 | 3902 | |
ac1970fb | 3903 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 3904 | |
f3705d53 | 3905 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 3906 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 3907 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 3908 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 3909 | } |
1e78bcc1 AG |
3910 | #if defined(TARGET_WORDS_BIGENDIAN) |
3911 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
3912 | val = bswap32(val); | |
3913 | } | |
3914 | #else | |
3915 | if (endian == DEVICE_BIG_ENDIAN) { | |
3916 | val = bswap32(val); | |
3917 | } | |
3918 | #endif | |
37ec01d4 | 3919 | io_mem_write(section->mr, addr, val, 4); |
8df1cd07 FB |
3920 | } else { |
3921 | unsigned long addr1; | |
f3705d53 | 3922 | addr1 = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) |
cc5bea60 | 3923 | + memory_region_section_addr(section, addr); |
8df1cd07 | 3924 | /* RAM case */ |
5579c7f3 | 3925 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
3926 | switch (endian) { |
3927 | case DEVICE_LITTLE_ENDIAN: | |
3928 | stl_le_p(ptr, val); | |
3929 | break; | |
3930 | case DEVICE_BIG_ENDIAN: | |
3931 | stl_be_p(ptr, val); | |
3932 | break; | |
3933 | default: | |
3934 | stl_p(ptr, val); | |
3935 | break; | |
3936 | } | |
51d7a9eb | 3937 | invalidate_and_set_dirty(addr1, 4); |
8df1cd07 FB |
3938 | } |
3939 | } | |
3940 | ||
a8170e5e | 3941 | void stl_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
3942 | { |
3943 | stl_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
3944 | } | |
3945 | ||
a8170e5e | 3946 | void stl_le_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
3947 | { |
3948 | stl_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
3949 | } | |
3950 | ||
a8170e5e | 3951 | void stl_be_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
3952 | { |
3953 | stl_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
3954 | } | |
3955 | ||
aab33094 | 3956 | /* XXX: optimize */ |
a8170e5e | 3957 | void stb_phys(hwaddr addr, uint32_t val) |
aab33094 FB |
3958 | { |
3959 | uint8_t v = val; | |
3960 | cpu_physical_memory_write(addr, &v, 1); | |
3961 | } | |
3962 | ||
733f0b02 | 3963 | /* warning: addr must be aligned */ |
a8170e5e | 3964 | static inline void stw_phys_internal(hwaddr addr, uint32_t val, |
1e78bcc1 | 3965 | enum device_endian endian) |
aab33094 | 3966 | { |
733f0b02 | 3967 | uint8_t *ptr; |
f3705d53 | 3968 | MemoryRegionSection *section; |
733f0b02 | 3969 | |
ac1970fb | 3970 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
733f0b02 | 3971 | |
f3705d53 | 3972 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 3973 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 3974 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 3975 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 3976 | } |
1e78bcc1 AG |
3977 | #if defined(TARGET_WORDS_BIGENDIAN) |
3978 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
3979 | val = bswap16(val); | |
3980 | } | |
3981 | #else | |
3982 | if (endian == DEVICE_BIG_ENDIAN) { | |
3983 | val = bswap16(val); | |
3984 | } | |
3985 | #endif | |
37ec01d4 | 3986 | io_mem_write(section->mr, addr, val, 2); |
733f0b02 MT |
3987 | } else { |
3988 | unsigned long addr1; | |
f3705d53 | 3989 | addr1 = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) |
cc5bea60 | 3990 | + memory_region_section_addr(section, addr); |
733f0b02 MT |
3991 | /* RAM case */ |
3992 | ptr = qemu_get_ram_ptr(addr1); | |
1e78bcc1 AG |
3993 | switch (endian) { |
3994 | case DEVICE_LITTLE_ENDIAN: | |
3995 | stw_le_p(ptr, val); | |
3996 | break; | |
3997 | case DEVICE_BIG_ENDIAN: | |
3998 | stw_be_p(ptr, val); | |
3999 | break; | |
4000 | default: | |
4001 | stw_p(ptr, val); | |
4002 | break; | |
4003 | } | |
51d7a9eb | 4004 | invalidate_and_set_dirty(addr1, 2); |
733f0b02 | 4005 | } |
aab33094 FB |
4006 | } |
4007 | ||
a8170e5e | 4008 | void stw_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
4009 | { |
4010 | stw_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
4011 | } | |
4012 | ||
a8170e5e | 4013 | void stw_le_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
4014 | { |
4015 | stw_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
4016 | } | |
4017 | ||
a8170e5e | 4018 | void stw_be_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
4019 | { |
4020 | stw_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
4021 | } | |
4022 | ||
aab33094 | 4023 | /* XXX: optimize */ |
a8170e5e | 4024 | void stq_phys(hwaddr addr, uint64_t val) |
aab33094 FB |
4025 | { |
4026 | val = tswap64(val); | |
71d2b725 | 4027 | cpu_physical_memory_write(addr, &val, 8); |
aab33094 FB |
4028 | } |
4029 | ||
a8170e5e | 4030 | void stq_le_phys(hwaddr addr, uint64_t val) |
1e78bcc1 AG |
4031 | { |
4032 | val = cpu_to_le64(val); | |
4033 | cpu_physical_memory_write(addr, &val, 8); | |
4034 | } | |
4035 | ||
a8170e5e | 4036 | void stq_be_phys(hwaddr addr, uint64_t val) |
1e78bcc1 AG |
4037 | { |
4038 | val = cpu_to_be64(val); | |
4039 | cpu_physical_memory_write(addr, &val, 8); | |
4040 | } | |
4041 | ||
5e2972fd | 4042 | /* virtual memory access for debug (includes writing to ROM) */ |
9349b4f9 | 4043 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
b448f2f3 | 4044 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
4045 | { |
4046 | int l; | |
a8170e5e | 4047 | hwaddr phys_addr; |
9b3c35e0 | 4048 | target_ulong page; |
13eb76e0 FB |
4049 | |
4050 | while (len > 0) { | |
4051 | page = addr & TARGET_PAGE_MASK; | |
4052 | phys_addr = cpu_get_phys_page_debug(env, page); | |
4053 | /* if no physical page mapped, return an error */ | |
4054 | if (phys_addr == -1) | |
4055 | return -1; | |
4056 | l = (page + TARGET_PAGE_SIZE) - addr; | |
4057 | if (l > len) | |
4058 | l = len; | |
5e2972fd | 4059 | phys_addr += (addr & ~TARGET_PAGE_MASK); |
5e2972fd AL |
4060 | if (is_write) |
4061 | cpu_physical_memory_write_rom(phys_addr, buf, l); | |
4062 | else | |
5e2972fd | 4063 | cpu_physical_memory_rw(phys_addr, buf, l, is_write); |
13eb76e0 FB |
4064 | len -= l; |
4065 | buf += l; | |
4066 | addr += l; | |
4067 | } | |
4068 | return 0; | |
4069 | } | |
a68fe89c | 4070 | #endif |
13eb76e0 | 4071 | |
2e70f6ef PB |
4072 | /* in deterministic execution mode, instructions doing device I/Os |
4073 | must be at the end of the TB */ | |
20503968 | 4074 | void cpu_io_recompile(CPUArchState *env, uintptr_t retaddr) |
2e70f6ef PB |
4075 | { |
4076 | TranslationBlock *tb; | |
4077 | uint32_t n, cflags; | |
4078 | target_ulong pc, cs_base; | |
4079 | uint64_t flags; | |
4080 | ||
20503968 | 4081 | tb = tb_find_pc(retaddr); |
2e70f6ef PB |
4082 | if (!tb) { |
4083 | cpu_abort(env, "cpu_io_recompile: could not find TB for pc=%p", | |
20503968 | 4084 | (void *)retaddr); |
2e70f6ef PB |
4085 | } |
4086 | n = env->icount_decr.u16.low + tb->icount; | |
20503968 | 4087 | cpu_restore_state(tb, env, retaddr); |
2e70f6ef | 4088 | /* Calculate how many instructions had been executed before the fault |
bf20dc07 | 4089 | occurred. */ |
2e70f6ef PB |
4090 | n = n - env->icount_decr.u16.low; |
4091 | /* Generate a new TB ending on the I/O insn. */ | |
4092 | n++; | |
4093 | /* On MIPS and SH, delay slot instructions can only be restarted if | |
4094 | they were already the first instruction in the TB. If this is not | |
bf20dc07 | 4095 | the first instruction in a TB then re-execute the preceding |
2e70f6ef PB |
4096 | branch. */ |
4097 | #if defined(TARGET_MIPS) | |
4098 | if ((env->hflags & MIPS_HFLAG_BMASK) != 0 && n > 1) { | |
4099 | env->active_tc.PC -= 4; | |
4100 | env->icount_decr.u16.low++; | |
4101 | env->hflags &= ~MIPS_HFLAG_BMASK; | |
4102 | } | |
4103 | #elif defined(TARGET_SH4) | |
4104 | if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0 | |
4105 | && n > 1) { | |
4106 | env->pc -= 2; | |
4107 | env->icount_decr.u16.low++; | |
4108 | env->flags &= ~(DELAY_SLOT | DELAY_SLOT_CONDITIONAL); | |
4109 | } | |
4110 | #endif | |
4111 | /* This should never happen. */ | |
4112 | if (n > CF_COUNT_MASK) | |
4113 | cpu_abort(env, "TB too big during recompile"); | |
4114 | ||
4115 | cflags = n | CF_LAST_IO; | |
4116 | pc = tb->pc; | |
4117 | cs_base = tb->cs_base; | |
4118 | flags = tb->flags; | |
4119 | tb_phys_invalidate(tb, -1); | |
4120 | /* FIXME: In theory this could raise an exception. In practice | |
4121 | we have already translated the block once so it's probably ok. */ | |
4122 | tb_gen_code(env, pc, cs_base, flags, cflags); | |
bf20dc07 | 4123 | /* TODO: If env->pc != tb->pc (i.e. the faulting instruction was not |
2e70f6ef PB |
4124 | the first in the TB) then we end up generating a whole new TB and |
4125 | repeating the fault, which is horribly inefficient. | |
4126 | Better would be to execute just this insn uncached, or generate a | |
4127 | second new TB. */ | |
4128 | cpu_resume_from_signal(env, NULL); | |
4129 | } | |
4130 | ||
b3755a91 PB |
4131 | #if !defined(CONFIG_USER_ONLY) |
4132 | ||
055403b2 | 4133 | void dump_exec_info(FILE *f, fprintf_function cpu_fprintf) |
e3db7226 FB |
4134 | { |
4135 | int i, target_code_size, max_target_code_size; | |
4136 | int direct_jmp_count, direct_jmp2_count, cross_page; | |
4137 | TranslationBlock *tb; | |
3b46e624 | 4138 | |
e3db7226 FB |
4139 | target_code_size = 0; |
4140 | max_target_code_size = 0; | |
4141 | cross_page = 0; | |
4142 | direct_jmp_count = 0; | |
4143 | direct_jmp2_count = 0; | |
4144 | for(i = 0; i < nb_tbs; i++) { | |
4145 | tb = &tbs[i]; | |
4146 | target_code_size += tb->size; | |
4147 | if (tb->size > max_target_code_size) | |
4148 | max_target_code_size = tb->size; | |
4149 | if (tb->page_addr[1] != -1) | |
4150 | cross_page++; | |
4151 | if (tb->tb_next_offset[0] != 0xffff) { | |
4152 | direct_jmp_count++; | |
4153 | if (tb->tb_next_offset[1] != 0xffff) { | |
4154 | direct_jmp2_count++; | |
4155 | } | |
4156 | } | |
4157 | } | |
4158 | /* XXX: avoid using doubles ? */ | |
57fec1fe | 4159 | cpu_fprintf(f, "Translation buffer state:\n"); |
f1bc0bcc | 4160 | cpu_fprintf(f, "gen code size %td/%zd\n", |
26a5f13b FB |
4161 | code_gen_ptr - code_gen_buffer, code_gen_buffer_max_size); |
4162 | cpu_fprintf(f, "TB count %d/%d\n", | |
4163 | nb_tbs, code_gen_max_blocks); | |
5fafdf24 | 4164 | cpu_fprintf(f, "TB avg target size %d max=%d bytes\n", |
e3db7226 FB |
4165 | nb_tbs ? target_code_size / nb_tbs : 0, |
4166 | max_target_code_size); | |
055403b2 | 4167 | cpu_fprintf(f, "TB avg host size %td bytes (expansion ratio: %0.1f)\n", |
e3db7226 FB |
4168 | nb_tbs ? (code_gen_ptr - code_gen_buffer) / nb_tbs : 0, |
4169 | target_code_size ? (double) (code_gen_ptr - code_gen_buffer) / target_code_size : 0); | |
5fafdf24 TS |
4170 | cpu_fprintf(f, "cross page TB count %d (%d%%)\n", |
4171 | cross_page, | |
e3db7226 FB |
4172 | nb_tbs ? (cross_page * 100) / nb_tbs : 0); |
4173 | cpu_fprintf(f, "direct jump count %d (%d%%) (2 jumps=%d %d%%)\n", | |
5fafdf24 | 4174 | direct_jmp_count, |
e3db7226 FB |
4175 | nb_tbs ? (direct_jmp_count * 100) / nb_tbs : 0, |
4176 | direct_jmp2_count, | |
4177 | nb_tbs ? (direct_jmp2_count * 100) / nb_tbs : 0); | |
57fec1fe | 4178 | cpu_fprintf(f, "\nStatistics:\n"); |
e3db7226 FB |
4179 | cpu_fprintf(f, "TB flush count %d\n", tb_flush_count); |
4180 | cpu_fprintf(f, "TB invalidate count %d\n", tb_phys_invalidate_count); | |
4181 | cpu_fprintf(f, "TLB flush count %d\n", tlb_flush_count); | |
b67d9a52 | 4182 | tcg_dump_info(f, cpu_fprintf); |
e3db7226 FB |
4183 | } |
4184 | ||
82afa586 BH |
4185 | /* |
4186 | * A helper function for the _utterly broken_ virtio device model to find out if | |
4187 | * it's running on a big endian machine. Don't do this at home kids! | |
4188 | */ | |
4189 | bool virtio_is_big_endian(void); | |
4190 | bool virtio_is_big_endian(void) | |
4191 | { | |
4192 | #if defined(TARGET_WORDS_BIGENDIAN) | |
4193 | return true; | |
4194 | #else | |
4195 | return false; | |
4196 | #endif | |
4197 | } | |
4198 | ||
61382a50 | 4199 | #endif |
76f35538 WC |
4200 | |
4201 | #ifndef CONFIG_USER_ONLY | |
a8170e5e | 4202 | bool cpu_physical_memory_is_io(hwaddr phys_addr) |
76f35538 WC |
4203 | { |
4204 | MemoryRegionSection *section; | |
4205 | ||
ac1970fb AK |
4206 | section = phys_page_find(address_space_memory.dispatch, |
4207 | phys_addr >> TARGET_PAGE_BITS); | |
76f35538 WC |
4208 | |
4209 | return !(memory_region_is_ram(section->mr) || | |
4210 | memory_region_is_romd(section->mr)); | |
4211 | } | |
4212 | #endif |